./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 366d45071e2a444aa552f231e24508af3eb704e415c6b738128a0398e54b53a7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:33:49,974 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:33:50,097 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-02 12:33:50,106 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:33:50,108 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:33:50,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:33:50,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:33:50,138 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:33:50,139 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:33:50,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:33:50,140 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:33:50,141 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:33:50,141 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:33:50,142 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:33:50,142 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:33:50,143 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:33:50,143 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:33:50,144 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:33:50,144 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:33:50,145 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:33:50,145 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:33:50,149 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:33:50,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:33:50,151 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:33:50,151 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:33:50,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:33:50,152 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:33:50,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:33:50,156 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:33:50,157 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:33:50,157 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:33:50,158 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:33:50,158 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 12:33:50,158 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:33:50,159 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:33:50,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:33:50,159 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:33:50,160 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:33:50,160 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:33:50,160 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:33:50,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:33:50,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:33:50,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:33:50,163 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:33:50,164 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:33:50,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:33:50,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:33:50,165 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:33:50,165 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:33:50,166 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_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 366d45071e2a444aa552f231e24508af3eb704e415c6b738128a0398e54b53a7 [2024-11-02 12:33:50,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:33:50,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:33:50,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:33:50,596 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:33:50,597 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:33:50,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i Unable to find full path for "g++" [2024-11-02 12:33:52,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:33:53,076 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:33:53,076 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i [2024-11-02 12:33:53,084 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/data/098b5d546/f011ee06233c4ad48a9b3f1495f62543/FLAG0c6ca1b49 [2024-11-02 12:33:53,099 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/data/098b5d546/f011ee06233c4ad48a9b3f1495f62543 [2024-11-02 12:33:53,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:33:53,103 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:33:53,107 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:33:53,107 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:33:53,116 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:33:53,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:33:53" (1/1) ... [2024-11-02 12:33:53,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@668d5c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:53, skipping insertion in model container [2024-11-02 12:33:53,118 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:33:53" (1/1) ... [2024-11-02 12:33:53,143 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:33:53,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:33:53,410 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:33:53,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:33:53,448 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:33:53,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:53 WrapperNode [2024-11-02 12:33:53,449 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:33:53,450 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:33:53,450 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:33:53,450 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:33:53,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:53" (1/1) ... [2024-11-02 12:33:53,465 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:53" (1/1) ... [2024-11-02 12:33:53,486 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 45 [2024-11-02 12:33:53,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:33:53,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:33:53,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:33:53,488 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:33:53,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:53" (1/1) ... [2024-11-02 12:33:53,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:53" (1/1) ... [2024-11-02 12:33:53,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:53" (1/1) ... [2024-11-02 12:33:53,524 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:53" (1/1) ... [2024-11-02 12:33:53,526 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:53" (1/1) ... [2024-11-02 12:33:53,536 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:53" (1/1) ... [2024-11-02 12:33:53,537 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:53" (1/1) ... [2024-11-02 12:33:53,543 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:53" (1/1) ... [2024-11-02 12:33:53,544 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:33:53,545 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:33:53,545 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:33:53,550 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:33:53,551 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:53" (1/1) ... [2024-11-02 12:33:53,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:33:53,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:53,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:33:53,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:33:53,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:33:53,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:33:53,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:33:53,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:33:53,736 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:33:53,738 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:33:53,883 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-02 12:33:53,883 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:33:53,949 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:33:53,949 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:33:53,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:33:53 BoogieIcfgContainer [2024-11-02 12:33:53,950 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:33:53,958 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:33:53,958 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:33:53,961 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:33:53,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:33:53" (1/3) ... [2024-11-02 12:33:53,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5efede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:33:53, skipping insertion in model container [2024-11-02 12:33:53,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:53" (2/3) ... [2024-11-02 12:33:53,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5efede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:33:53, skipping insertion in model container [2024-11-02 12:33:53,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:33:53" (3/3) ... [2024-11-02 12:33:53,972 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark38_conjunctive.i [2024-11-02 12:33:54,011 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:33:54,016 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-02 12:33:54,114 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:33:54,123 INFO L333 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, 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;@10b12aa4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:33:54,124 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-02 12:33:54,129 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) [2024-11-02 12:33:54,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-02 12:33:54,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:54,137 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-02 12:33:54,138 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 12:33:54,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:54,145 INFO L85 PathProgramCache]: Analyzing trace with hash 2420664, now seen corresponding path program 1 times [2024-11-02 12:33:54,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:54,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432689958] [2024-11-02 12:33:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:54,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:54,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:54,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432689958] [2024-11-02 12:33:54,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432689958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:54,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:54,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:33:54,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846416515] [2024-11-02 12:33:54,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:54,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:33:54,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:54,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:33:54,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:33:54,354 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 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:54,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:54,395 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2024-11-02 12:33:54,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:33:54,398 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-02 12:33:54,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:54,418 INFO L225 Difference]: With dead ends: 24 [2024-11-02 12:33:54,418 INFO L226 Difference]: Without dead ends: 16 [2024-11-02 12:33:54,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:33:54,435 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:54,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:33:54,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-02 12:33:54,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-02 12:33:54,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.6) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:54,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2024-11-02 12:33:54,499 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 4 [2024-11-02 12:33:54,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:54,503 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2024-11-02 12:33:54,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:54,503 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2024-11-02 12:33:54,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-02 12:33:54,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:54,504 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-02 12:33:54,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:33:54,511 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 12:33:54,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:54,512 INFO L85 PathProgramCache]: Analyzing trace with hash 75025815, now seen corresponding path program 1 times [2024-11-02 12:33:54,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:54,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227580498] [2024-11-02 12:33:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:54,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:54,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:54,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:54,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227580498] [2024-11-02 12:33:54,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227580498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:54,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:54,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:33:54,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264854079] [2024-11-02 12:33:54,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:54,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:33:54,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:54,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:33:54,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:33:54,681 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2024-11-02 12:33:54,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:54,711 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2024-11-02 12:33:54,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:33:54,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2024-11-02 12:33:54,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:54,714 INFO L225 Difference]: With dead ends: 16 [2024-11-02 12:33:54,715 INFO L226 Difference]: Without dead ends: 15 [2024-11-02 12:33:54,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:33:54,716 INFO L432 NwaCegarLoop]: 10 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, 10 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 [2024-11-02 12:33:54,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 10 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:33:54,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-02 12:33:54,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-02 12:33:54,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:54,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-11-02 12:33:54,723 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 5 [2024-11-02 12:33:54,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:54,725 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-11-02 12:33:54,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2024-11-02 12:33:54,725 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-11-02 12:33:54,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-02 12:33:54,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:54,726 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-02 12:33:54,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:33:54,726 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 12:33:54,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:54,729 INFO L85 PathProgramCache]: Analyzing trace with hash 75025764, now seen corresponding path program 1 times [2024-11-02 12:33:54,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:54,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761325249] [2024-11-02 12:33:54,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:54,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:54,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:54,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761325249] [2024-11-02 12:33:54,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761325249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:54,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:54,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:33:54,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450610363] [2024-11-02 12:33:54,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:54,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:33:54,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:54,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:33:54,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:33:54,778 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:54,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:54,801 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2024-11-02 12:33:54,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:33:54,802 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 [2024-11-02 12:33:54,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:54,803 INFO L225 Difference]: With dead ends: 23 [2024-11-02 12:33:54,803 INFO L226 Difference]: Without dead ends: 22 [2024-11-02 12:33:54,804 INFO L431 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 [2024-11-02 12:33:54,805 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:54,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 19 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:33:54,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-02 12:33:54,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2024-11-02 12:33:54,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:54,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-02 12:33:54,812 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2024-11-02 12:33:54,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:54,812 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-02 12:33:54,812 INFO L472 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) [2024-11-02 12:33:54,812 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-02 12:33:54,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:33:54,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:54,813 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 12:33:54,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:33:54,814 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 12:33:54,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:54,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1969166980, now seen corresponding path program 1 times [2024-11-02 12:33:54,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:54,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382504719] [2024-11-02 12:33:54,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:54,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:54,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:54,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:54,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382504719] [2024-11-02 12:33:54,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382504719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:54,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:54,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:33:54,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993210001] [2024-11-02 12:33:54,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:54,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:33:54,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:54,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:33:54,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:33:54,898 INFO L87 Difference]: Start difference. First operand 18 states and 19 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) [2024-11-02 12:33:54,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:54,915 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2024-11-02 12:33:54,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:33:54,916 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 [2024-11-02 12:33:54,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:54,917 INFO L225 Difference]: With dead ends: 23 [2024-11-02 12:33:54,917 INFO L226 Difference]: Without dead ends: 22 [2024-11-02 12:33:54,917 INFO L431 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 [2024-11-02 12:33:54,919 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:54,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:33:54,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-02 12:33:54,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-11-02 12:33:54,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 19 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) [2024-11-02 12:33:54,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-11-02 12:33:54,928 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2024-11-02 12:33:54,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:54,928 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-11-02 12:33:54,929 INFO L472 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) [2024-11-02 12:33:54,929 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-11-02 12:33:54,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:33:54,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:54,932 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 12:33:54,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:33:54,933 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 12:33:54,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:54,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1969168550, now seen corresponding path program 1 times [2024-11-02 12:33:54,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:54,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696410441] [2024-11-02 12:33:54,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:54,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:55,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:55,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:55,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696410441] [2024-11-02 12:33:55,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696410441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:55,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:55,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:33:55,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896010624] [2024-11-02 12:33:55,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:55,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:33:55,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:55,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:33:55,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:33:55,008 INFO L87 Difference]: Start difference. First operand 20 states and 21 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) [2024-11-02 12:33:55,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:55,044 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2024-11-02 12:33:55,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:33:55,046 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 [2024-11-02 12:33:55,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:55,050 INFO L225 Difference]: With dead ends: 22 [2024-11-02 12:33:55,050 INFO L226 Difference]: Without dead ends: 19 [2024-11-02 12:33:55,050 INFO L431 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 [2024-11-02 12:33:55,051 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 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 [2024-11-02 12:33:55,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:33:55,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-02 12:33:55,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-02 12:33:55,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:55,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2024-11-02 12:33:55,064 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 6 [2024-11-02 12:33:55,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:55,064 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2024-11-02 12:33:55,065 INFO L472 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) [2024-11-02 12:33:55,065 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2024-11-02 12:33:55,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-02 12:33:55,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:55,066 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:55,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:33:55,066 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 12:33:55,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:55,067 INFO L85 PathProgramCache]: Analyzing trace with hash -914634183, now seen corresponding path program 1 times [2024-11-02 12:33:55,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:55,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429516609] [2024-11-02 12:33:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:55,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:55,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:55,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:55,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429516609] [2024-11-02 12:33:55,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429516609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:55,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:55,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:33:55,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372283839] [2024-11-02 12:33:55,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:55,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:33:55,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:55,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:33:55,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:33:55,162 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2024-11-02 12:33:55,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:55,205 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2024-11-02 12:33:55,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:33:55,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2024-11-02 12:33:55,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:55,210 INFO L225 Difference]: With dead ends: 19 [2024-11-02 12:33:55,211 INFO L226 Difference]: Without dead ends: 17 [2024-11-02 12:33:55,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:33:55,215 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:55,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 12 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:33:55,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-02 12:33:55,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-02 12:33:55,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:55,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2024-11-02 12:33:55,228 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2024-11-02 12:33:55,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:55,228 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2024-11-02 12:33:55,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2024-11-02 12:33:55,229 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2024-11-02 12:33:55,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-02 12:33:55,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:55,229 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:55,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:33:55,232 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 12:33:55,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:55,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1711111454, now seen corresponding path program 1 times [2024-11-02 12:33:55,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:55,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299949305] [2024-11-02 12:33:55,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:55,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:55,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:55,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299949305] [2024-11-02 12:33:55,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299949305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:55,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:55,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:33:55,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214428876] [2024-11-02 12:33:55,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:55,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:33:55,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:55,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:33:55,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:33:55,331 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:55,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:55,361 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2024-11-02 12:33:55,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:33:55,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-02 12:33:55,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:55,362 INFO L225 Difference]: With dead ends: 20 [2024-11-02 12:33:55,362 INFO L226 Difference]: Without dead ends: 19 [2024-11-02 12:33:55,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:33:55,364 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:55,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:33:55,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-02 12:33:55,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-02 12:33:55,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:55,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2024-11-02 12:33:55,369 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 8 [2024-11-02 12:33:55,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:55,370 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2024-11-02 12:33:55,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:55,370 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2024-11-02 12:33:55,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-02 12:33:55,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:55,371 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:55,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:33:55,372 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 12:33:55,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:55,373 INFO L85 PathProgramCache]: Analyzing trace with hash 45190213, now seen corresponding path program 1 times [2024-11-02 12:33:55,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:55,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136187334] [2024-11-02 12:33:55,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:55,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:55,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:55,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:55,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136187334] [2024-11-02 12:33:55,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136187334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:33:55,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740543787] [2024-11-02 12:33:55,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:55,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:55,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:55,452 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:33:55,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:33:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:55,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:33:55,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:55,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:55,655 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:33:55,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:55,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740543787] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:33:55,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [376948212] [2024-11-02 12:33:55,810 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-02 12:33:55,810 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:33:55,818 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:33:55,831 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:33:55,832 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:33:56,668 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:33:56,941 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '412#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~y~0#1|))' at error location [2024-11-02 12:33:56,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:33:56,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:33:56,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-02 12:33:56,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696686140] [2024-11-02 12:33:56,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:33:56,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:33:56,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:56,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:33:56,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:33:56,943 INFO L87 Difference]: Start difference. First operand 19 states and 19 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) [2024-11-02 12:33:56,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:56,986 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2024-11-02 12:33:56,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:33:56,987 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 [2024-11-02 12:33:56,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:56,988 INFO L225 Difference]: With dead ends: 47 [2024-11-02 12:33:56,988 INFO L226 Difference]: Without dead ends: 46 [2024-11-02 12:33:56,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:33:56,989 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:56,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 41 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:33:56,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-02 12:33:56,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 35. [2024-11-02 12:33:56,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.25) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:57,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2024-11-02 12:33:57,002 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 12 [2024-11-02 12:33:57,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:57,002 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2024-11-02 12:33:57,002 INFO L472 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) [2024-11-02 12:33:57,003 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2024-11-02 12:33:57,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-02 12:33:57,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:57,003 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:57,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 12:33:57,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-02 12:33:57,211 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 12:33:57,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:57,212 INFO L85 PathProgramCache]: Analyzing trace with hash 45188643, now seen corresponding path program 1 times [2024-11-02 12:33:57,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:57,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81842801] [2024-11-02 12:33:57,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:57,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:57,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:57,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:57,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81842801] [2024-11-02 12:33:57,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81842801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:33:57,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149675209] [2024-11-02 12:33:57,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:57,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:57,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:57,302 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:33:57,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:33:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:57,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:33:57,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:57,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:33:57,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:57,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149675209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:33:57,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [124726720] [2024-11-02 12:33:57,417 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-02 12:33:57,417 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:33:57,419 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:33:57,419 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:33:57,419 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:33:57,800 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:33:58,153 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '584#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_#t~nondet3#1_24| Int)) (= |v_ULTIMATE.start_main_#t~nondet3#1_24| 0)))' at error location [2024-11-02 12:33:58,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:33:58,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:33:58,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-02 12:33:58,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520416296] [2024-11-02 12:33:58,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:33:58,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:33:58,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:58,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:33:58,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-02 12:33:58,155 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 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) [2024-11-02 12:33:58,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:58,204 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2024-11-02 12:33:58,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:33:58,206 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 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 [2024-11-02 12:33:58,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:58,207 INFO L225 Difference]: With dead ends: 41 [2024-11-02 12:33:58,207 INFO L226 Difference]: Without dead ends: 35 [2024-11-02 12:33:58,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-02 12:33:58,208 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:58,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 36 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:33:58,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-02 12:33:58,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-02 12:33:58,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.15625) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:58,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2024-11-02 12:33:58,219 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 12 [2024-11-02 12:33:58,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:58,219 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2024-11-02 12:33:58,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 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) [2024-11-02 12:33:58,220 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2024-11-02 12:33:58,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 12:33:58,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:58,220 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1] [2024-11-02 12:33:58,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 12:33:58,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:58,425 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 12:33:58,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:58,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1313170288, now seen corresponding path program 1 times [2024-11-02 12:33:58,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:58,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440994208] [2024-11-02 12:33:58,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:58,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:58,524 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:58,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:58,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440994208] [2024-11-02 12:33:58,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440994208] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:33:58,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595495156] [2024-11-02 12:33:58,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:58,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:58,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:58,527 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:33:58,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:33:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:58,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 12:33:58,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:58,615 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:58,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:33:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:58,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595495156] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:33:58,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1871708346] [2024-11-02 12:33:58,747 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-02 12:33:58,747 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:33:58,753 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:33:58,753 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:33:58,753 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:33:59,123 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:33:59,381 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '805#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2024-11-02 12:33:59,382 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:33:59,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:33:59,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-02 12:33:59,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008122994] [2024-11-02 12:33:59,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:33:59,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-02 12:33:59,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:59,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-02 12:33:59,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2024-11-02 12:33:59,384 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:59,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:59,473 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2024-11-02 12:33:59,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-02 12:33:59,474 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 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 20 [2024-11-02 12:33:59,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:59,476 INFO L225 Difference]: With dead ends: 58 [2024-11-02 12:33:59,476 INFO L226 Difference]: Without dead ends: 57 [2024-11-02 12:33:59,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2024-11-02 12:33:59,478 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:59,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 65 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:33:59,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-02 12:33:59,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2024-11-02 12:33:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 46 states have (on average 1.173913043478261) internal successors, (54), 48 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2024-11-02 12:33:59,485 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 20 [2024-11-02 12:33:59,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:59,485 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2024-11-02 12:33:59,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:59,486 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2024-11-02 12:33:59,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-02 12:33:59,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:59,487 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2024-11-02 12:33:59,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-02 12:33:59,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-02 12:33:59,691 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 12:33:59,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:59,692 INFO L85 PathProgramCache]: Analyzing trace with hash 488239989, now seen corresponding path program 2 times [2024-11-02 12:33:59,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:59,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135535267] [2024-11-02 12:33:59,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:59,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:59,857 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:59,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:59,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135535267] [2024-11-02 12:33:59,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135535267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:33:59,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818891882] [2024-11-02 12:33:59,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-02 12:33:59,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:59,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:59,861 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:33:59,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 12:33:59,913 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-02 12:33:59,914 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:33:59,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-02 12:33:59,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:59,962 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:59,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:00,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818891882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:00,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1883463841] [2024-11-02 12:34:00,099 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-02 12:34:00,099 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:00,099 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:00,100 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:00,100 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:00,385 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:34:00,730 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1086#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (exists ((|v_ULTIMATE.start_main_#t~nondet3#1_40| Int)) (= |v_ULTIMATE.start_main_#t~nondet3#1_40| 0)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647))' at error location [2024-11-02 12:34:00,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:34:00,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:34:00,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-02 12:34:00,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763223033] [2024-11-02 12:34:00,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:34:00,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-02 12:34:00,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:00,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-02 12:34:00,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2024-11-02 12:34:00,733 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 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) [2024-11-02 12:34:00,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:00,800 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2024-11-02 12:34:00,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-02 12:34:00,801 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 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) Word has length 24 [2024-11-02 12:34:00,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:00,802 INFO L225 Difference]: With dead ends: 65 [2024-11-02 12:34:00,802 INFO L226 Difference]: Without dead ends: 56 [2024-11-02 12:34:00,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2024-11-02 12:34:00,803 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:00,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 58 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:34:00,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-02 12:34:00,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2024-11-02 12:34:00,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 50 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:00,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2024-11-02 12:34:00,809 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 24 [2024-11-02 12:34:00,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:00,809 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2024-11-02 12:34:00,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 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) [2024-11-02 12:34:00,810 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2024-11-02 12:34:00,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-02 12:34:00,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:00,812 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1] [2024-11-02 12:34:00,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-02 12:34:01,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-02 12:34:01,013 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 12:34:01,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:01,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1487675360, now seen corresponding path program 2 times [2024-11-02 12:34:01,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:01,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647083802] [2024-11-02 12:34:01,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:01,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:01,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:01,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647083802] [2024-11-02 12:34:01,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647083802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:34:01,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836061018] [2024-11-02 12:34:01,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-02 12:34:01,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:01,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:01,156 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:01,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 12:34:01,206 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-02 12:34:01,206 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:34:01,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 12:34:01,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:01,252 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:01,345 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:01,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836061018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:01,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1237332949] [2024-11-02 12:34:01,347 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-02 12:34:01,348 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:01,348 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:01,348 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:01,348 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:01,631 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:34:01,853 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1411#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~y~0#1|))' at error location [2024-11-02 12:34:01,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:34:01,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:34:01,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-02 12:34:01,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10472960] [2024-11-02 12:34:01,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:34:01,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-02 12:34:01,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:01,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-02 12:34:01,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-02 12:34:01,856 INFO L87 Difference]: Start difference. First operand 51 states and 53 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) [2024-11-02 12:34:01,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:01,905 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2024-11-02 12:34:01,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:34:01,906 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 [2024-11-02 12:34:01,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:01,906 INFO L225 Difference]: With dead ends: 84 [2024-11-02 12:34:01,907 INFO L226 Difference]: Without dead ends: 83 [2024-11-02 12:34:01,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-02 12:34:01,908 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:01,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 74 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:34:01,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-02 12:34:01,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 71. [2024-11-02 12:34:01,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 68 states have (on average 1.1323529411764706) internal successors, (77), 70 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:01,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2024-11-02 12:34:01,914 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 30 [2024-11-02 12:34:01,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:01,915 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2024-11-02 12:34:01,915 INFO L472 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) [2024-11-02 12:34:01,915 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2024-11-02 12:34:01,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-02 12:34:01,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:01,916 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 1, 1, 1] [2024-11-02 12:34:01,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-02 12:34:02,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-02 12:34:02,117 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 12:34:02,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:02,117 INFO L85 PathProgramCache]: Analyzing trace with hash 566947604, now seen corresponding path program 2 times [2024-11-02 12:34:02,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:02,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084128242] [2024-11-02 12:34:02,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:02,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:02,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:02,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084128242] [2024-11-02 12:34:02,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084128242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:34:02,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60709460] [2024-11-02 12:34:02,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-02 12:34:02,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:02,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:02,419 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:02,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-02 12:34:02,479 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-02 12:34:02,479 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:34:02,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-02 12:34:02,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:02,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:02,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60709460] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:02,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1166998227] [2024-11-02 12:34:02,931 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-02 12:34:02,932 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:02,932 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:02,932 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:02,932 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:03,226 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:34:03,476 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1882#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2024-11-02 12:34:03,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:34:03,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:34:03,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-11-02 12:34:03,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509709169] [2024-11-02 12:34:03,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:34:03,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-02 12:34:03,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:03,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-02 12:34:03,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2024-11-02 12:34:03,482 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:03,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:03,601 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2024-11-02 12:34:03,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-02 12:34:03,601 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-02 12:34:03,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:03,602 INFO L225 Difference]: With dead ends: 116 [2024-11-02 12:34:03,602 INFO L226 Difference]: Without dead ends: 115 [2024-11-02 12:34:03,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2024-11-02 12:34:03,604 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:03,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 86 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:34:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-02 12:34:03,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2024-11-02 12:34:03,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 94 states have (on average 1.148936170212766) internal successors, (108), 96 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:03,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2024-11-02 12:34:03,612 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 44 [2024-11-02 12:34:03,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:03,612 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2024-11-02 12:34:03,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:03,612 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2024-11-02 12:34:03,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-02 12:34:03,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:03,613 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2024-11-02 12:34:03,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-02 12:34:03,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-02 12:34:03,818 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 12:34:03,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:03,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1441336601, now seen corresponding path program 3 times [2024-11-02 12:34:03,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:03,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810929867] [2024-11-02 12:34:03,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:03,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:04,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:04,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810929867] [2024-11-02 12:34:04,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810929867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:34:04,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668262969] [2024-11-02 12:34:04,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-02 12:34:04,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:04,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:04,112 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:04,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-02 12:34:04,165 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-02 12:34:04,165 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:34:04,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-02 12:34:04,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:04,264 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:04,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:04,654 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:04,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668262969] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:04,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1794201819] [2024-11-02 12:34:04,656 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-02 12:34:04,656 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:04,656 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:04,656 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:04,657 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:04,903 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:34:05,225 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2445#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_#t~nondet3#1_73| Int)) (= |v_ULTIMATE.start_main_#t~nondet3#1_73| 0)))' at error location [2024-11-02 12:34:05,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:34:05,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:34:05,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-11-02 12:34:05,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810890497] [2024-11-02 12:34:05,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:34:05,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-02 12:34:05,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:05,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-02 12:34:05,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1187, Unknown=0, NotChecked=0, Total=1482 [2024-11-02 12:34:05,229 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand has 32 states, 31 states have (on average 3.064516129032258) internal successors, (95), 32 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:05,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:05,360 INFO L93 Difference]: Finished difference Result 123 states and 130 transitions. [2024-11-02 12:34:05,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-02 12:34:05,361 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.064516129032258) internal successors, (95), 32 states have internal predecessors, (95), 0 states have call successors, (0), 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 48 [2024-11-02 12:34:05,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:05,362 INFO L225 Difference]: With dead ends: 123 [2024-11-02 12:34:05,362 INFO L226 Difference]: Without dead ends: 106 [2024-11-02 12:34:05,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=295, Invalid=1187, Unknown=0, NotChecked=0, Total=1482 [2024-11-02 12:34:05,363 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 49 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:05,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 100 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:34:05,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-02 12:34:05,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 99. [2024-11-02 12:34:05,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 98 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:05,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2024-11-02 12:34:05,371 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 48 [2024-11-02 12:34:05,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:05,371 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2024-11-02 12:34:05,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.064516129032258) internal successors, (95), 32 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:05,372 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2024-11-02 12:34:05,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-02 12:34:05,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:05,373 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1] [2024-11-02 12:34:05,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-02 12:34:05,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-02 12:34:05,575 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 12:34:05,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:05,576 INFO L85 PathProgramCache]: Analyzing trace with hash 196072854, now seen corresponding path program 3 times [2024-11-02 12:34:05,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:05,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107361720] [2024-11-02 12:34:05,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:05,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:05,869 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:05,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:05,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107361720] [2024-11-02 12:34:05,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107361720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:34:05,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763383107] [2024-11-02 12:34:05,870 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-02 12:34:05,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:05,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:05,872 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:05,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-02 12:34:05,942 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-02 12:34:05,942 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:34:05,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-02 12:34:05,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:06,057 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:06,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:06,345 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:06,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763383107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:06,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1982214884] [2024-11-02 12:34:06,347 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-02 12:34:06,347 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:06,348 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:06,348 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:06,348 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:06,622 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:34:06,827 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3120#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~y~0#1|))' at error location [2024-11-02 12:34:06,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:34:06,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:34:06,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-11-02 12:34:06,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671118949] [2024-11-02 12:34:06,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:34:06,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-02 12:34:06,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:06,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-02 12:34:06,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=577, Unknown=0, NotChecked=0, Total=870 [2024-11-02 12:34:06,831 INFO L87 Difference]: Start difference. First operand 99 states and 103 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) [2024-11-02 12:34:06,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:06,943 INFO L93 Difference]: Finished difference Result 172 states and 183 transitions. [2024-11-02 12:34:06,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-02 12:34:06,944 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 [2024-11-02 12:34:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:06,945 INFO L225 Difference]: With dead ends: 172 [2024-11-02 12:34:06,945 INFO L226 Difference]: Without dead ends: 171 [2024-11-02 12:34:06,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=293, Invalid=577, Unknown=0, NotChecked=0, Total=870 [2024-11-02 12:34:06,946 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 58 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:06,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 142 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:34:06,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-02 12:34:06,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 143. [2024-11-02 12:34:06,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 140 states have (on average 1.1214285714285714) internal successors, (157), 142 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:06,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 157 transitions. [2024-11-02 12:34:06,971 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 157 transitions. Word has length 66 [2024-11-02 12:34:06,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:06,972 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 157 transitions. [2024-11-02 12:34:06,972 INFO L472 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) [2024-11-02 12:34:06,972 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 157 transitions. [2024-11-02 12:34:06,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-02 12:34:06,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:06,974 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 1, 1, 1] [2024-11-02 12:34:06,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-02 12:34:07,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-02 12:34:07,175 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 12:34:07,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:07,175 INFO L85 PathProgramCache]: Analyzing trace with hash 526058076, now seen corresponding path program 3 times [2024-11-02 12:34:07,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:07,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744766678] [2024-11-02 12:34:07,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:07,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:08,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:08,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744766678] [2024-11-02 12:34:08,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744766678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:34:08,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414078358] [2024-11-02 12:34:08,036 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-02 12:34:08,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:08,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:08,038 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:08,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-02 12:34:08,107 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-02 12:34:08,107 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:34:08,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-02 12:34:08,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:08,287 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:08,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:09,377 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:09,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414078358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:09,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [524446494] [2024-11-02 12:34:09,379 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-02 12:34:09,379 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:09,379 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:09,380 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:09,380 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:09,588 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:34:09,875 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4095#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2024-11-02 12:34:09,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:34:09,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:34:09,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2024-11-02 12:34:09,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770077919] [2024-11-02 12:34:09,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:34:09,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-02 12:34:09,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:09,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-02 12:34:09,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1006, Invalid=3550, Unknown=0, NotChecked=0, Total=4556 [2024-11-02 12:34:09,880 INFO L87 Difference]: Start difference. First operand 143 states and 157 transitions. Second operand has 62 states, 61 states have (on average 3.0) internal successors, (183), 62 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:10,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:10,112 INFO L93 Difference]: Finished difference Result 232 states and 262 transitions. [2024-11-02 12:34:10,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-02 12:34:10,113 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 3.0) internal successors, (183), 62 states have internal predecessors, (183), 0 states have call successors, (0), 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 92 [2024-11-02 12:34:10,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:10,114 INFO L225 Difference]: With dead ends: 232 [2024-11-02 12:34:10,114 INFO L226 Difference]: Without dead ends: 231 [2024-11-02 12:34:10,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1554 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1006, Invalid=3550, Unknown=0, NotChecked=0, Total=4556 [2024-11-02 12:34:10,116 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 95 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:10,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 154 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:34:10,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-02 12:34:10,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 193. [2024-11-02 12:34:10,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 190 states have (on average 1.1368421052631579) internal successors, (216), 192 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:10,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 216 transitions. [2024-11-02 12:34:10,127 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 216 transitions. Word has length 92 [2024-11-02 12:34:10,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:10,127 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 216 transitions. [2024-11-02 12:34:10,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 3.0) internal successors, (183), 62 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:10,128 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 216 transitions. [2024-11-02 12:34:10,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-02 12:34:10,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:10,130 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2024-11-02 12:34:10,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-02 12:34:10,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-02 12:34:10,335 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 12:34:10,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:10,335 INFO L85 PathProgramCache]: Analyzing trace with hash 456014945, now seen corresponding path program 4 times [2024-11-02 12:34:10,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:10,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21915445] [2024-11-02 12:34:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:10,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:11,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:11,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21915445] [2024-11-02 12:34:11,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21915445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:34:11,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549567699] [2024-11-02 12:34:11,226 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-02 12:34:11,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:11,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:11,228 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:11,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-02 12:34:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:11,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-02 12:34:11,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:11,460 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:11,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:12,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549567699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:12,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [82840488] [2024-11-02 12:34:12,735 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-02 12:34:12,735 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:12,736 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:12,736 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:12,736 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:13,030 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:34:13,479 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5222#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_#t~nondet3#1_128| Int)) (= |v_ULTIMATE.start_main_#t~nondet3#1_128| 0)))' at error location [2024-11-02 12:34:13,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:34:13,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:34:13,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2024-11-02 12:34:13,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493613964] [2024-11-02 12:34:13,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:34:13,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-02 12:34:13,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:13,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-02 12:34:13,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1079, Invalid=3891, Unknown=0, NotChecked=0, Total=4970 [2024-11-02 12:34:13,483 INFO L87 Difference]: Start difference. First operand 193 states and 216 transitions. Second operand has 64 states, 63 states have (on average 3.0317460317460316) internal successors, (191), 64 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:13,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:13,733 INFO L93 Difference]: Finished difference Result 239 states and 254 transitions. [2024-11-02 12:34:13,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-02 12:34:13,734 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 3.0317460317460316) internal successors, (191), 64 states have internal predecessors, (191), 0 states have call successors, (0), 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 96 [2024-11-02 12:34:13,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:13,735 INFO L225 Difference]: With dead ends: 239 [2024-11-02 12:34:13,735 INFO L226 Difference]: Without dead ends: 206 [2024-11-02 12:34:13,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1735 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1079, Invalid=3891, Unknown=0, NotChecked=0, Total=4970 [2024-11-02 12:34:13,738 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 113 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:13,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 162 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:34:13,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-02 12:34:13,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 195. [2024-11-02 12:34:13,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 192 states have (on average 1.0572916666666667) internal successors, (203), 194 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:13,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 203 transitions. [2024-11-02 12:34:13,754 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 203 transitions. Word has length 96 [2024-11-02 12:34:13,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:13,754 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 203 transitions. [2024-11-02 12:34:13,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 3.0317460317460316) internal successors, (191), 64 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:13,755 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 203 transitions. [2024-11-02 12:34:13,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-02 12:34:13,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:13,761 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 1, 1, 1] [2024-11-02 12:34:13,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-02 12:34:13,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-02 12:34:13,962 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 12:34:13,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:13,964 INFO L85 PathProgramCache]: Analyzing trace with hash -264489086, now seen corresponding path program 4 times [2024-11-02 12:34:13,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:13,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238108294] [2024-11-02 12:34:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:13,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:14,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:14,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238108294] [2024-11-02 12:34:14,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238108294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:34:14,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832792284] [2024-11-02 12:34:14,769 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-02 12:34:14,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:14,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:14,771 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:14,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-02 12:34:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:14,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-02 12:34:14,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:15,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:15,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:16,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832792284] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:16,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1630374469] [2024-11-02 12:34:16,158 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-02 12:34:16,159 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:16,159 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:16,159 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:16,160 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:16,384 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:34:16,676 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6597#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~y~0#1|))' at error location [2024-11-02 12:34:16,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:34:16,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:34:16,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2024-11-02 12:34:16,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544499838] [2024-11-02 12:34:16,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:34:16,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-02 12:34:16,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:16,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-02 12:34:16,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1145, Invalid=1717, Unknown=0, NotChecked=0, Total=2862 [2024-11-02 12:34:16,680 INFO L87 Difference]: Start difference. First operand 195 states and 203 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) [2024-11-02 12:34:16,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:16,921 INFO L93 Difference]: Finished difference Result 348 states and 371 transitions. [2024-11-02 12:34:16,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-02 12:34:16,922 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 [2024-11-02 12:34:16,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:16,925 INFO L225 Difference]: With dead ends: 348 [2024-11-02 12:34:16,925 INFO L226 Difference]: Without dead ends: 347 [2024-11-02 12:34:16,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1145, Invalid=1717, Unknown=0, NotChecked=0, Total=2862 [2024-11-02 12:34:16,927 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 138 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:16,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 278 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:34:16,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-02 12:34:16,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 287. [2024-11-02 12:34:16,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 284 states have (on average 1.1161971830985915) internal successors, (317), 286 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:16,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 317 transitions. [2024-11-02 12:34:16,940 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 317 transitions. Word has length 138 [2024-11-02 12:34:16,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:16,940 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 317 transitions. [2024-11-02 12:34:16,941 INFO L472 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) [2024-11-02 12:34:16,941 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 317 transitions. [2024-11-02 12:34:16,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-02 12:34:16,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:16,944 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 31, 30, 1, 1, 1] [2024-11-02 12:34:16,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-02 12:34:17,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-02 12:34:17,148 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 12:34:17,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:17,149 INFO L85 PathProgramCache]: Analyzing trace with hash 335485164, now seen corresponding path program 4 times [2024-11-02 12:34:17,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:17,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32160108] [2024-11-02 12:34:17,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:17,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2790 backedges. 0 proven. 2790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:19,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:19,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32160108] [2024-11-02 12:34:19,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32160108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:34:19,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56873778] [2024-11-02 12:34:19,993 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-02 12:34:19,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:19,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:19,995 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:19,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be87b43b-b64e-45d9-8d58-5fcad67a4fd5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-02 12:34:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:20,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-02 12:34:20,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2790 backedges. 0 proven. 2790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:20,403 INFO L311 TraceCheckSpWp]: Computing backward predicates...