./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/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_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 70ea356a4fda57b451264a060e40bb07db2fe648bea4e3256fcecf71a5a8e7b7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:20:42,477 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:20:42,592 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 05:20:42,600 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:20:42,601 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:20:42,637 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:20:42,637 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:20:42,638 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:20:42,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:20:42,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:20:42,644 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:20:42,646 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:20:42,646 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:20:42,648 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:20:42,648 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:20:42,649 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:20:42,649 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:20:42,650 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:20:42,650 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:20:42,650 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:20:42,651 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:20:42,651 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:20:42,653 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:20:42,653 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:20:42,653 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:20:42,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:20:42,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:20:42,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:20:42,655 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:20:42,655 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:20:42,657 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:20:42,657 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:20:42,657 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:20:42,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:20:42,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:20:42,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:20:42,658 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:20:42,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:20:42,659 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:20:42,659 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:20:42,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:20:42,659 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:20:42,660 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:20:42,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:20:42,661 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_268660b7-146b-4571-a5bf-16db8e5ec26e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70ea356a4fda57b451264a060e40bb07db2fe648bea4e3256fcecf71a5a8e7b7 [2023-11-19 05:20:42,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:20:42,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:20:42,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:20:42,960 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:20:42,960 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:20:42,962 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c [2023-11-19 05:20:46,118 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:20:46,293 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:20:46,293 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c [2023-11-19 05:20:46,301 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/data/bdbd3e428/35780e5fc4ee4720b0569406602c2133/FLAG5908dd49c [2023-11-19 05:20:46,316 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/data/bdbd3e428/35780e5fc4ee4720b0569406602c2133 [2023-11-19 05:20:46,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:20:46,320 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:20:46,321 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:20:46,322 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:20:46,327 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:20:46,328 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:20:46" (1/1) ... [2023-11-19 05:20:46,329 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@355db274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:46, skipping insertion in model container [2023-11-19 05:20:46,329 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:20:46" (1/1) ... [2023-11-19 05:20:46,350 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:20:46,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:20:46,542 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:20:46,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:20:46,566 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:20:46,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:46 WrapperNode [2023-11-19 05:20:46,566 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:20:46,568 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:20:46,568 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:20:46,568 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:20:46,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:46" (1/1) ... [2023-11-19 05:20:46,580 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:46" (1/1) ... [2023-11-19 05:20:46,599 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2023-11-19 05:20:46,599 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:20:46,600 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:20:46,600 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:20:46,601 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:20:46,609 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:46" (1/1) ... [2023-11-19 05:20:46,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:46" (1/1) ... [2023-11-19 05:20:46,610 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:46" (1/1) ... [2023-11-19 05:20:46,611 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:46" (1/1) ... [2023-11-19 05:20:46,613 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:46" (1/1) ... [2023-11-19 05:20:46,617 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:46" (1/1) ... [2023-11-19 05:20:46,618 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:46" (1/1) ... [2023-11-19 05:20:46,619 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:46" (1/1) ... [2023-11-19 05:20:46,625 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:20:46,626 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:20:46,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:20:46,627 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:20:46,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:46" (1/1) ... [2023-11-19 05:20:46,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:20:46,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:46,658 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:20:46,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:20:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:20:46,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:20:46,770 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:20:46,772 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:20:46,863 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:20:46,884 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:20:46,884 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:20:46,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:20:46 BoogieIcfgContainer [2023-11-19 05:20:46,889 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:20:46,892 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:20:46,892 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:20:46,895 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:20:46,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:20:46" (1/3) ... [2023-11-19 05:20:46,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f992d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:20:46, skipping insertion in model container [2023-11-19 05:20:46,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:46" (2/3) ... [2023-11-19 05:20:46,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f992d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:20:46, skipping insertion in model container [2023-11-19 05:20:46,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:20:46" (3/3) ... [2023-11-19 05:20:46,899 INFO L112 eAbstractionObserver]: Analyzing ICFG ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c [2023-11-19 05:20:46,919 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:20:46,919 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 05:20:46,969 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:20:46,977 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;@73691df6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:20:46,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 05:20:46,981 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:46,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:20:46,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:46,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:20:46,989 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:46,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:46,995 INFO L85 PathProgramCache]: Analyzing trace with hash 69427029, now seen corresponding path program 1 times [2023-11-19 05:20:47,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:47,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428368735] [2023-11-19 05:20:47,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:47,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:47,255 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 05:20:47,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:47,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428368735] [2023-11-19 05:20:47,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428368735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:47,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:47,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:20:47,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299068114] [2023-11-19 05:20:47,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:47,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:20:47,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:47,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:20:47,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:20:47,315 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:47,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:47,406 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-11-19 05:20:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:20:47,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 05:20:47,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:47,416 INFO L225 Difference]: With dead ends: 31 [2023-11-19 05:20:47,416 INFO L226 Difference]: Without dead ends: 26 [2023-11-19 05:20:47,419 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 05:20:47,427 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:47,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:47,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-19 05:20:47,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2023-11-19 05:20:47,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:47,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2023-11-19 05:20:47,465 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 5 [2023-11-19 05:20:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:47,465 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2023-11-19 05:20:47,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:47,466 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-11-19 05:20:47,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:20:47,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:47,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:20:47,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:20:47,468 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:47,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:47,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2142729346, now seen corresponding path program 1 times [2023-11-19 05:20:47,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:47,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937842752] [2023-11-19 05:20:47,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:47,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:47,581 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 05:20:47,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:47,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937842752] [2023-11-19 05:20:47,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937842752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:47,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:47,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:20:47,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500214952] [2023-11-19 05:20:47,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:47,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:20:47,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:47,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:20:47,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:20:47,589 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:47,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:47,638 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2023-11-19 05:20:47,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:20:47,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 05:20:47,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:47,639 INFO L225 Difference]: With dead ends: 40 [2023-11-19 05:20:47,640 INFO L226 Difference]: Without dead ends: 38 [2023-11-19 05:20:47,640 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 05:20:47,642 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:47,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:47,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-19 05:20:47,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2023-11-19 05:20:47,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 35 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:47,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2023-11-19 05:20:47,649 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 6 [2023-11-19 05:20:47,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:47,650 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2023-11-19 05:20:47,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:47,650 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2023-11-19 05:20:47,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:20:47,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:47,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:47,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:20:47,651 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:47,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:47,652 INFO L85 PathProgramCache]: Analyzing trace with hash -2000100226, now seen corresponding path program 1 times [2023-11-19 05:20:47,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:47,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567498841] [2023-11-19 05:20:47,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:47,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:47,711 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 05:20:47,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:47,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567498841] [2023-11-19 05:20:47,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567498841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:47,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:47,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:20:47,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942491169] [2023-11-19 05:20:47,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:47,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:20:47,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:47,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:20:47,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:20:47,715 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:47,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:47,735 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2023-11-19 05:20:47,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:20:47,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 05:20:47,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:47,736 INFO L225 Difference]: With dead ends: 36 [2023-11-19 05:20:47,737 INFO L226 Difference]: Without dead ends: 35 [2023-11-19 05:20:47,737 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 05:20:47,739 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:47,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:47,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-19 05:20:47,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-11-19 05:20:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 34 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:47,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2023-11-19 05:20:47,747 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 7 [2023-11-19 05:20:47,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:47,748 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2023-11-19 05:20:47,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:47,748 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2023-11-19 05:20:47,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:20:47,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:47,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:47,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:20:47,750 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:47,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:47,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1873564800, now seen corresponding path program 1 times [2023-11-19 05:20:47,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:47,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499080293] [2023-11-19 05:20:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:47,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:47,815 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 05:20:47,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:47,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499080293] [2023-11-19 05:20:47,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499080293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:47,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:47,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:20:47,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276090702] [2023-11-19 05:20:47,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:47,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:20:47,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:47,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:20:47,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:20:47,821 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:47,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:47,843 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2023-11-19 05:20:47,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:20:47,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 05:20:47,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:47,845 INFO L225 Difference]: With dead ends: 41 [2023-11-19 05:20:47,845 INFO L226 Difference]: Without dead ends: 40 [2023-11-19 05:20:47,845 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 05:20:47,847 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:47,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:47,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-19 05:20:47,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-19 05:20:47,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.4) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:47,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2023-11-19 05:20:47,856 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 8 [2023-11-19 05:20:47,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:47,857 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2023-11-19 05:20:47,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:47,857 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2023-11-19 05:20:47,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:20:47,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:47,858 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:47,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:20:47,859 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:47,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:47,860 INFO L85 PathProgramCache]: Analyzing trace with hash 799855624, now seen corresponding path program 1 times [2023-11-19 05:20:47,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:47,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752156548] [2023-11-19 05:20:47,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:47,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:47,952 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 05:20:47,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:47,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752156548] [2023-11-19 05:20:47,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752156548] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:47,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272570508] [2023-11-19 05:20:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:47,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:47,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:47,962 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:47,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:20:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:48,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:20:48,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:48,067 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 05:20:48,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:48,132 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 05:20:48,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272570508] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:20:48,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [303885970] [2023-11-19 05:20:48,161 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-19 05:20:48,161 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:48,166 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:48,172 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:48,172 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:48,539 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:48,823 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '409#(and (exists ((|v_ULTIMATE.start_main_#t~nondet3#1_20| Int)) (and (<= |v_ULTIMATE.start_main_#t~nondet3#1_20| 2147483647) (not (= |v_ULTIMATE.start_main_#t~nondet3#1_20| 0)) (<= 0 (+ |v_ULTIMATE.start_main_#t~nondet3#1_20| 2147483648)))) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= (+ 2147483650 |ULTIMATE.start_main_~a~0#1|) 0))' at error location [2023-11-19 05:20:48,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:20:48,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:20:48,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-19 05:20:48,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636340047] [2023-11-19 05:20:48,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:20:48,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:20:48,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:48,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:20:48,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:20:48,826 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:48,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:48,882 INFO L93 Difference]: Finished difference Result 81 states and 109 transitions. [2023-11-19 05:20:48,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:20:48,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 05:20:48,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:48,885 INFO L225 Difference]: With dead ends: 81 [2023-11-19 05:20:48,885 INFO L226 Difference]: Without dead ends: 79 [2023-11-19 05:20:48,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:20:48,888 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:48,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 25 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:48,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-19 05:20:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 50. [2023-11-19 05:20:48,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 49 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2023-11-19 05:20:48,899 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 11 [2023-11-19 05:20:48,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:48,899 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2023-11-19 05:20:48,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:48,900 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2023-11-19 05:20:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:20:48,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:48,901 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:48,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:49,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:49,116 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:49,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:49,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1616469403, now seen corresponding path program 1 times [2023-11-19 05:20:49,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:49,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995710936] [2023-11-19 05:20:49,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:49,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:49,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:49,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:49,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995710936] [2023-11-19 05:20:49,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995710936] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:49,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196055764] [2023-11-19 05:20:49,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:49,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:49,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:49,194 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:49,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:20:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:49,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:20:49,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:49,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:49,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:49,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196055764] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:20:49,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1394258339] [2023-11-19 05:20:49,286 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:20:49,286 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:49,287 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:49,287 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:49,287 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:49,661 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:49,854 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '635#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|))' at error location [2023-11-19 05:20:49,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:20:49,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:20:49,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-19 05:20:49,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936046793] [2023-11-19 05:20:49,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:20:49,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:20:49,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:49,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:20:49,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:20:49,861 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:49,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:49,917 INFO L93 Difference]: Finished difference Result 124 states and 167 transitions. [2023-11-19 05:20:49,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:20:49,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 05:20:49,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:49,919 INFO L225 Difference]: With dead ends: 124 [2023-11-19 05:20:49,919 INFO L226 Difference]: Without dead ends: 122 [2023-11-19 05:20:49,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:20:49,921 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:49,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 37 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:49,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-19 05:20:49,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 99. [2023-11-19 05:20:49,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 95 states have (on average 1.3368421052631578) internal successors, (127), 98 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:49,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 127 transitions. [2023-11-19 05:20:49,936 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 127 transitions. Word has length 12 [2023-11-19 05:20:49,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:49,937 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 127 transitions. [2023-11-19 05:20:49,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:49,937 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 127 transitions. [2023-11-19 05:20:49,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:20:49,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:49,938 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-19 05:20:49,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:50,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 05:20:50,153 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:50,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:50,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1351066791, now seen corresponding path program 1 times [2023-11-19 05:20:50,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:50,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165521326] [2023-11-19 05:20:50,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:50,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:50,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:50,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:50,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165521326] [2023-11-19 05:20:50,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165521326] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:50,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199949009] [2023-11-19 05:20:50,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:50,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:50,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:50,199 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:50,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:20:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:50,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:20:50,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:50,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:50,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:50,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199949009] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:20:50,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [501628848] [2023-11-19 05:20:50,287 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:20:50,287 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:50,288 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:50,288 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:50,288 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:50,589 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:50,758 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '977#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:20:50,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:20:50,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:20:50,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-19 05:20:50,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641537782] [2023-11-19 05:20:50,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:20:50,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:20:50,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:50,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:20:50,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:20:50,761 INFO L87 Difference]: Start difference. First operand 99 states and 127 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:50,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:50,805 INFO L93 Difference]: Finished difference Result 212 states and 272 transitions. [2023-11-19 05:20:50,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:20:50,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-19 05:20:50,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:50,809 INFO L225 Difference]: With dead ends: 212 [2023-11-19 05:20:50,809 INFO L226 Difference]: Without dead ends: 211 [2023-11-19 05:20:50,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:20:50,811 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:50,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 43 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:50,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-19 05:20:50,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2023-11-19 05:20:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 205 states have (on average 1.2292682926829268) internal successors, (252), 208 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:50,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 252 transitions. [2023-11-19 05:20:50,853 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 252 transitions. Word has length 14 [2023-11-19 05:20:50,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:50,853 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 252 transitions. [2023-11-19 05:20:50,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:50,854 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 252 transitions. [2023-11-19 05:20:50,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 05:20:50,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:50,856 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1] [2023-11-19 05:20:50,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:51,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:51,069 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:51,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:51,069 INFO L85 PathProgramCache]: Analyzing trace with hash 541767483, now seen corresponding path program 1 times [2023-11-19 05:20:51,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:51,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557550391] [2023-11-19 05:20:51,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:51,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:51,157 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:51,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:51,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557550391] [2023-11-19 05:20:51,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557550391] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:51,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437222622] [2023-11-19 05:20:51,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:51,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:51,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:51,165 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:51,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:20:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:51,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:20:51,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:51,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:51,287 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:51,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437222622] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:20:51,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [137305843] [2023-11-19 05:20:51,291 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:20:51,291 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:51,293 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:51,293 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:51,294 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:51,399 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:51,607 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1561#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~max~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0))' at error location [2023-11-19 05:20:51,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:20:51,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:20:51,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-19 05:20:51,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529226036] [2023-11-19 05:20:51,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:20:51,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:20:51,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:51,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:20:51,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:20:51,610 INFO L87 Difference]: Start difference. First operand 209 states and 252 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:51,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:51,693 INFO L93 Difference]: Finished difference Result 410 states and 524 transitions. [2023-11-19 05:20:51,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:20:51,694 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-19 05:20:51,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:51,696 INFO L225 Difference]: With dead ends: 410 [2023-11-19 05:20:51,697 INFO L226 Difference]: Without dead ends: 409 [2023-11-19 05:20:51,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:20:51,699 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 38 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:51,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 44 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:51,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-11-19 05:20:51,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 341. [2023-11-19 05:20:51,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 337 states have (on average 1.2640949554896141) internal successors, (426), 340 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:51,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 426 transitions. [2023-11-19 05:20:51,736 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 426 transitions. Word has length 17 [2023-11-19 05:20:51,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:51,736 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 426 transitions. [2023-11-19 05:20:51,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:51,737 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 426 transitions. [2023-11-19 05:20:51,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 05:20:51,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:51,739 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1] [2023-11-19 05:20:51,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:51,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 05:20:51,956 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:51,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:51,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1081708646, now seen corresponding path program 2 times [2023-11-19 05:20:51,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:51,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310616600] [2023-11-19 05:20:51,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:51,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:52,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:52,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310616600] [2023-11-19 05:20:52,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310616600] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:52,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277089925] [2023-11-19 05:20:52,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:20:52,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:52,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:52,120 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:52,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:20:52,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-19 05:20:52,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:20:52,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:20:52,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:52,210 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:52,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:52,291 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:52,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277089925] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:20:52,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1071181131] [2023-11-19 05:20:52,294 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:20:52,294 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:52,295 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:52,295 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:52,295 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:52,481 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:52,683 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2600#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|))' at error location [2023-11-19 05:20:52,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:20:52,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:20:52,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-19 05:20:52,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448587042] [2023-11-19 05:20:52,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:20:52,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:20:52,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:52,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:20:52,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2023-11-19 05:20:52,687 INFO L87 Difference]: Start difference. First operand 341 states and 426 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:52,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:52,840 INFO L93 Difference]: Finished difference Result 886 states and 1203 transitions. [2023-11-19 05:20:52,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 05:20:52,841 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-11-19 05:20:52,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:52,846 INFO L225 Difference]: With dead ends: 886 [2023-11-19 05:20:52,846 INFO L226 Difference]: Without dead ends: 884 [2023-11-19 05:20:52,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2023-11-19 05:20:52,848 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 50 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:52,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 77 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:52,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2023-11-19 05:20:52,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 581. [2023-11-19 05:20:52,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 577 states have (on average 1.2807625649913346) internal successors, (739), 580 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:52,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 739 transitions. [2023-11-19 05:20:52,882 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 739 transitions. Word has length 30 [2023-11-19 05:20:52,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:52,883 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 739 transitions. [2023-11-19 05:20:52,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:52,883 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 739 transitions. [2023-11-19 05:20:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 05:20:52,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:52,892 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1] [2023-11-19 05:20:52,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:53,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 05:20:53,112 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:53,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:53,113 INFO L85 PathProgramCache]: Analyzing trace with hash -139921252, now seen corresponding path program 2 times [2023-11-19 05:20:53,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:53,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800371352] [2023-11-19 05:20:53,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:53,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:53,210 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:53,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:53,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800371352] [2023-11-19 05:20:53,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800371352] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:53,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140293351] [2023-11-19 05:20:53,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:20:53,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:53,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:53,212 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:53,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:20:53,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-19 05:20:53,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:20:53,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:20:53,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:53,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:53,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140293351] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:20:53,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [546104667] [2023-11-19 05:20:53,420 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:20:53,421 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:53,421 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:53,421 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:53,421 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:53,606 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:53,831 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4465#(and (<= |ULTIMATE.start_main_~a~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:20:53,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:20:53,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:20:53,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-19 05:20:53,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448835373] [2023-11-19 05:20:53,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:20:53,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:20:53,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:53,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:20:53,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-11-19 05:20:53,836 INFO L87 Difference]: Start difference. First operand 581 states and 739 transitions. Second operand has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 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 05:20:53,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:53,981 INFO L93 Difference]: Finished difference Result 1687 states and 2177 transitions. [2023-11-19 05:20:53,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 05:20:53,981 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 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 05:20:53,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:53,991 INFO L225 Difference]: With dead ends: 1687 [2023-11-19 05:20:53,991 INFO L226 Difference]: Without dead ends: 1686 [2023-11-19 05:20:53,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-11-19 05:20:53,994 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 61 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:53,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 86 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:53,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2023-11-19 05:20:54,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1682. [2023-11-19 05:20:54,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1678 states have (on average 1.1889153754469606) internal successors, (1995), 1681 states have internal predecessors, (1995), 0 states have call successors, (0), 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 05:20:54,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 1995 transitions. [2023-11-19 05:20:54,092 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 1995 transitions. Word has length 32 [2023-11-19 05:20:54,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:54,093 INFO L495 AbstractCegarLoop]: Abstraction has 1682 states and 1995 transitions. [2023-11-19 05:20:54,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 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 05:20:54,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 1995 transitions. [2023-11-19 05:20:54,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 05:20:54,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:54,095 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1] [2023-11-19 05:20:54,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:54,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:54,304 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:54,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:54,305 INFO L85 PathProgramCache]: Analyzing trace with hash 152586887, now seen corresponding path program 2 times [2023-11-19 05:20:54,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:54,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635244766] [2023-11-19 05:20:54,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:54,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:54,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:54,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635244766] [2023-11-19 05:20:54,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635244766] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:54,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188704170] [2023-11-19 05:20:54,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:20:54,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:54,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:54,426 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:54,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:20:54,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-19 05:20:54,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:20:54,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 05:20:54,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:54,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:54,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188704170] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:20:54,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [766601061] [2023-11-19 05:20:54,681 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:20:54,681 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:54,681 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:54,682 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:54,682 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:54,768 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:55,019 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8549#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~max~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0))' at error location [2023-11-19 05:20:55,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:20:55,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:20:55,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-19 05:20:55,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921798426] [2023-11-19 05:20:55,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:20:55,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 05:20:55,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:55,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 05:20:55,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2023-11-19 05:20:55,023 INFO L87 Difference]: Start difference. First operand 1682 states and 1995 transitions. Second operand has 16 states, 15 states have (on average 5.4) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:55,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:55,306 INFO L93 Difference]: Finished difference Result 3500 states and 4318 transitions. [2023-11-19 05:20:55,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 05:20:55,306 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.4) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-11-19 05:20:55,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:55,325 INFO L225 Difference]: With dead ends: 3500 [2023-11-19 05:20:55,325 INFO L226 Difference]: Without dead ends: 3499 [2023-11-19 05:20:55,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2023-11-19 05:20:55,330 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 120 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:55,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 92 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:55,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3499 states. [2023-11-19 05:20:55,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3499 to 2129. [2023-11-19 05:20:55,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2125 states have (on average 1.207529411764706) internal successors, (2566), 2128 states have internal predecessors, (2566), 0 states have call successors, (0), 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 05:20:55,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 2566 transitions. [2023-11-19 05:20:55,467 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 2566 transitions. Word has length 41 [2023-11-19 05:20:55,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:55,467 INFO L495 AbstractCegarLoop]: Abstraction has 2129 states and 2566 transitions. [2023-11-19 05:20:55,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.4) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:55,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 2566 transitions. [2023-11-19 05:20:55,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 05:20:55,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:55,474 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1] [2023-11-19 05:20:55,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-19 05:20:55,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:55,690 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:55,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:55,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1666232252, now seen corresponding path program 3 times [2023-11-19 05:20:55,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:55,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647604303] [2023-11-19 05:20:55,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:55,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:55,935 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:55,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:55,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647604303] [2023-11-19 05:20:55,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647604303] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:55,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172037987] [2023-11-19 05:20:55,936 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 05:20:55,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:55,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:55,941 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:55,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 05:20:56,002 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 05:20:56,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:20:56,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 05:20:56,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:56,090 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:56,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:56,370 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:56,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172037987] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:20:56,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1143175513] [2023-11-19 05:20:56,373 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:20:56,373 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:56,373 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:56,373 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:56,373 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:56,526 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:56,750 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15327#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|))' at error location [2023-11-19 05:20:56,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:20:56,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:20:56,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-11-19 05:20:56,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986133246] [2023-11-19 05:20:56,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:20:56,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 05:20:56,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:56,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 05:20:56,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=632, Unknown=0, NotChecked=0, Total=930 [2023-11-19 05:20:56,753 INFO L87 Difference]: Start difference. First operand 2129 states and 2566 transitions. Second operand has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:57,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:57,173 INFO L93 Difference]: Finished difference Result 5682 states and 7447 transitions. [2023-11-19 05:20:57,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 05:20:57,174 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-19 05:20:57,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:57,202 INFO L225 Difference]: With dead ends: 5682 [2023-11-19 05:20:57,202 INFO L226 Difference]: Without dead ends: 5680 [2023-11-19 05:20:57,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=298, Invalid=632, Unknown=0, NotChecked=0, Total=930 [2023-11-19 05:20:57,208 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 216 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:57,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 157 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:20:57,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5680 states. [2023-11-19 05:20:57,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5680 to 3159. [2023-11-19 05:20:57,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3159 states, 3155 states have (on average 1.2294770206022188) internal successors, (3879), 3158 states have internal predecessors, (3879), 0 states have call successors, (0), 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 05:20:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 3879 transitions. [2023-11-19 05:20:57,474 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 3879 transitions. Word has length 66 [2023-11-19 05:20:57,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:57,474 INFO L495 AbstractCegarLoop]: Abstraction has 3159 states and 3879 transitions. [2023-11-19 05:20:57,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 3879 transitions. [2023-11-19 05:20:57,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 05:20:57,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:57,479 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 1, 1, 1] [2023-11-19 05:20:57,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:57,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 05:20:57,699 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:57,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:57,699 INFO L85 PathProgramCache]: Analyzing trace with hash 773609158, now seen corresponding path program 3 times [2023-11-19 05:20:57,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:57,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326827807] [2023-11-19 05:20:57,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:57,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:57,916 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:57,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:57,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326827807] [2023-11-19 05:20:57,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326827807] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:57,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139326805] [2023-11-19 05:20:57,917 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 05:20:57,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:57,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:57,919 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:57,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 05:20:57,978 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 05:20:57,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:20:57,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 05:20:57,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:58,075 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:58,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:58,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139326805] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:20:58,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [771099248] [2023-11-19 05:20:58,372 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:20:58,373 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:58,373 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:58,373 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:58,373 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:58,553 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:58,752 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25752#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:20:58,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:20:58,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:20:58,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-11-19 05:20:58,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144392309] [2023-11-19 05:20:58,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:20:58,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 05:20:58,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:58,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 05:20:58,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=633, Unknown=0, NotChecked=0, Total=930 [2023-11-19 05:20:58,755 INFO L87 Difference]: Start difference. First operand 3159 states and 3879 transitions. Second operand has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 24 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:59,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:59,462 INFO L93 Difference]: Finished difference Result 12415 states and 15746 transitions. [2023-11-19 05:20:59,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 05:20:59,497 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 24 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-11-19 05:20:59,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:59,558 INFO L225 Difference]: With dead ends: 12415 [2023-11-19 05:20:59,558 INFO L226 Difference]: Without dead ends: 12414 [2023-11-19 05:20:59,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=633, Unknown=0, NotChecked=0, Total=930 [2023-11-19 05:20:59,569 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 162 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:59,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 167 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:59,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12414 states. [2023-11-19 05:21:00,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12414 to 12406. [2023-11-19 05:21:00,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12406 states, 12402 states have (on average 1.1599741977100468) internal successors, (14386), 12405 states have internal predecessors, (14386), 0 states have call successors, (0), 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 05:21:00,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12406 states to 12406 states and 14386 transitions. [2023-11-19 05:21:00,470 INFO L78 Accepts]: Start accepts. Automaton has 12406 states and 14386 transitions. Word has length 68 [2023-11-19 05:21:00,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:00,472 INFO L495 AbstractCegarLoop]: Abstraction has 12406 states and 14386 transitions. [2023-11-19 05:21:00,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 24 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:00,472 INFO L276 IsEmpty]: Start isEmpty. Operand 12406 states and 14386 transitions. [2023-11-19 05:21:00,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-19 05:21:00,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:00,480 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1] [2023-11-19 05:21:00,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:00,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:00,696 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:21:00,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:00,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1333197537, now seen corresponding path program 3 times [2023-11-19 05:21:00,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:00,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742460826] [2023-11-19 05:21:00,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:00,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:01,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:01,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742460826] [2023-11-19 05:21:01,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742460826] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:21:01,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841307153] [2023-11-19 05:21:01,076 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 05:21:01,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:01,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:01,077 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:01,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 05:21:01,144 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 05:21:01,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:21:01,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 05:21:01,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:01,257 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:01,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:01,723 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:01,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841307153] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:21:01,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [275363085] [2023-11-19 05:21:01,725 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:21:01,725 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:21:01,725 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:21:01,725 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:21:01,725 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:21:01,790 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:21:02,028 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '54434#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~max~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0))' at error location [2023-11-19 05:21:02,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:21:02,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:21:02,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2023-11-19 05:21:02,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328150501] [2023-11-19 05:21:02,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:21:02,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-19 05:21:02,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:02,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-19 05:21:02,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=520, Invalid=962, Unknown=0, NotChecked=0, Total=1482 [2023-11-19 05:21:02,032 INFO L87 Difference]: Start difference. First operand 12406 states and 14386 transitions. Second operand has 32 states, 31 states have (on average 5.709677419354839) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:03,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:03,654 INFO L93 Difference]: Finished difference Result 29252 states and 34995 transitions. [2023-11-19 05:21:03,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-19 05:21:03,654 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.709677419354839) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-11-19 05:21:03,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:03,738 INFO L225 Difference]: With dead ends: 29252 [2023-11-19 05:21:03,739 INFO L226 Difference]: Without dead ends: 29251 [2023-11-19 05:21:03,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=520, Invalid=962, Unknown=0, NotChecked=0, Total=1482 [2023-11-19 05:21:03,763 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 412 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:03,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 188 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:21:03,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29251 states. [2023-11-19 05:21:04,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29251 to 14277. [2023-11-19 05:21:04,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14277 states, 14273 states have (on average 1.1710922721221888) internal successors, (16715), 14276 states have internal predecessors, (16715), 0 states have call successors, (0), 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 05:21:05,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14277 states to 14277 states and 16715 transitions. [2023-11-19 05:21:05,025 INFO L78 Accepts]: Start accepts. Automaton has 14277 states and 16715 transitions. Word has length 89 [2023-11-19 05:21:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:05,025 INFO L495 AbstractCegarLoop]: Abstraction has 14277 states and 16715 transitions. [2023-11-19 05:21:05,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.709677419354839) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:05,026 INFO L276 IsEmpty]: Start isEmpty. Operand 14277 states and 16715 transitions. [2023-11-19 05:21:05,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-19 05:21:05,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:05,057 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 1, 1, 1] [2023-11-19 05:21:05,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:05,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:05,280 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:21:05,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:05,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2039147160, now seen corresponding path program 4 times [2023-11-19 05:21:05,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:05,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768382547] [2023-11-19 05:21:05,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:05,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:06,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:06,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:06,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768382547] [2023-11-19 05:21:06,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768382547] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:21:06,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123653572] [2023-11-19 05:21:06,078 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 05:21:06,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:06,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:06,080 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:06,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 05:21:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:06,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 05:21:06,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:06,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:06,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:07,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:07,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123653572] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:21:07,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [138985071] [2023-11-19 05:21:07,312 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:21:07,313 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:21:07,313 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:21:07,313 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:21:07,313 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:21:07,439 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:21:07,693 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '104469#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|))' at error location [2023-11-19 05:21:07,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:21:07,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:21:07,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-11-19 05:21:07,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14475307] [2023-11-19 05:21:07,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:21:07,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-19 05:21:07,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:07,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-19 05:21:07,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=1817, Unknown=0, NotChecked=0, Total=2970 [2023-11-19 05:21:07,698 INFO L87 Difference]: Start difference. First operand 14277 states and 16715 transitions. Second operand has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:09,836 INFO L93 Difference]: Finished difference Result 40492 states and 51102 transitions. [2023-11-19 05:21:09,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-19 05:21:09,837 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-11-19 05:21:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:09,904 INFO L225 Difference]: With dead ends: 40492 [2023-11-19 05:21:09,904 INFO L226 Difference]: Without dead ends: 40490 [2023-11-19 05:21:09,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1153, Invalid=1817, Unknown=0, NotChecked=0, Total=2970 [2023-11-19 05:21:09,923 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 483 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:09,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 332 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:21:09,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40490 states. [2023-11-19 05:21:11,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40490 to 18733. [2023-11-19 05:21:11,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18733 states, 18729 states have (on average 1.1907736665064872) internal successors, (22302), 18732 states have internal predecessors, (22302), 0 states have call successors, (0), 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 05:21:11,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18733 states to 18733 states and 22302 transitions. [2023-11-19 05:21:11,547 INFO L78 Accepts]: Start accepts. Automaton has 18733 states and 22302 transitions. Word has length 138 [2023-11-19 05:21:11,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:11,548 INFO L495 AbstractCegarLoop]: Abstraction has 18733 states and 22302 transitions. [2023-11-19 05:21:11,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:11,549 INFO L276 IsEmpty]: Start isEmpty. Operand 18733 states and 22302 transitions. [2023-11-19 05:21:11,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-19 05:21:11,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:11,580 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 1, 1, 1] [2023-11-19 05:21:11,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:11,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 05:21:11,796 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:21:11,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:11,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1115335706, now seen corresponding path program 4 times [2023-11-19 05:21:11,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:11,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111386291] [2023-11-19 05:21:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:11,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:12,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:12,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:12,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111386291] [2023-11-19 05:21:12,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111386291] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:21:12,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487922049] [2023-11-19 05:21:12,768 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 05:21:12,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:12,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:12,769 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:12,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 05:21:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:12,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 05:21:12,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:13,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:13,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:14,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487922049] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:21:14,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1292514731] [2023-11-19 05:21:14,080 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:21:14,080 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:21:14,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:21:14,081 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:21:14,081 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:21:14,247 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:21:14,538 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '172208#(and (<= |ULTIMATE.start_main_~a~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:21:14,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:21:14,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:21:14,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-11-19 05:21:14,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697039318] [2023-11-19 05:21:14,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:21:14,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-19 05:21:14,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:14,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-19 05:21:14,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1154, Invalid=1816, Unknown=0, NotChecked=0, Total=2970 [2023-11-19 05:21:14,543 INFO L87 Difference]: Start difference. First operand 18733 states and 22302 transitions. Second operand has 48 states, 47 states have (on average 5.9361702127659575) internal successors, (279), 48 states have internal predecessors, (279), 0 states have call successors, (0), 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 05:21:19,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:19,997 INFO L93 Difference]: Finished difference Result 95253 states and 119315 transitions. [2023-11-19 05:21:19,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-19 05:21:19,997 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.9361702127659575) internal successors, (279), 48 states have internal predecessors, (279), 0 states have call successors, (0), 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 140 [2023-11-19 05:21:19,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:20,104 INFO L225 Difference]: With dead ends: 95253 [2023-11-19 05:21:20,104 INFO L226 Difference]: Without dead ends: 95252 [2023-11-19 05:21:20,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1154, Invalid=1816, Unknown=0, NotChecked=0, Total=2970 [2023-11-19 05:21:20,130 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 513 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:20,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 317 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:21:20,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95252 states. [2023-11-19 05:21:26,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95252 to 95236. [2023-11-19 05:21:26,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95236 states, 95232 states have (on average 1.1432291666666667) internal successors, (108872), 95235 states have internal predecessors, (108872), 0 states have call successors, (0), 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 05:21:26,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95236 states to 95236 states and 108872 transitions. [2023-11-19 05:21:26,900 INFO L78 Accepts]: Start accepts. Automaton has 95236 states and 108872 transitions. Word has length 140 [2023-11-19 05:21:26,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:26,900 INFO L495 AbstractCegarLoop]: Abstraction has 95236 states and 108872 transitions. [2023-11-19 05:21:26,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.9361702127659575) internal successors, (279), 48 states have internal predecessors, (279), 0 states have call successors, (0), 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 05:21:26,901 INFO L276 IsEmpty]: Start isEmpty. Operand 95236 states and 108872 transitions. [2023-11-19 05:21:26,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-11-19 05:21:26,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:26,956 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1, 1] [2023-11-19 05:21:26,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:27,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 05:21:27,157 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:21:27,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:27,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1133562447, now seen corresponding path program 4 times [2023-11-19 05:21:27,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:27,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018845865] [2023-11-19 05:21:27,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:27,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:28,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:28,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:28,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018845865] [2023-11-19 05:21:28,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018845865] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:21:28,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928103335] [2023-11-19 05:21:28,507 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 05:21:28,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:28,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:28,508 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:28,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268660b7-146b-4571-a5bf-16db8e5ec26e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 05:21:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:28,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-19 05:21:28,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:28,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:28,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:30,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928103335] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:21:30,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [938378369] [2023-11-19 05:21:30,576 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:21:30,576 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:21:30,576 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:21:30,576 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:21:30,576 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:21:30,636 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:21:30,955 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '388630#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~max~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0))' at error location [2023-11-19 05:21:30,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:21:30,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:21:30,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2023-11-19 05:21:30,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207223896] [2023-11-19 05:21:30,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:21:30,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-11-19 05:21:30,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:30,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-11-19 05:21:30,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2040, Invalid=2930, Unknown=0, NotChecked=0, Total=4970 [2023-11-19 05:21:30,963 INFO L87 Difference]: Start difference. First operand 95236 states and 108872 transitions. Second operand has 64 states, 63 states have (on average 5.857142857142857) internal successors, (369), 64 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)