./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c --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_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/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_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/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_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/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 a340dc1e9a375ad2082e9c8cecf3a1a681edcfe0f7220085504fa1991ced3d70 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:28:19,864 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:28:19,960 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-02 12:28:19,969 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:28:19,969 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:28:20,001 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:28:20,002 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:28:20,002 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:28:20,002 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:28:20,005 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:28:20,006 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:28:20,006 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:28:20,008 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:28:20,009 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:28:20,009 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:28:20,009 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:28:20,010 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:28:20,010 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:28:20,011 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:28:20,011 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:28:20,011 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:28:20,020 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:28:20,021 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:28:20,021 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:28:20,021 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:28:20,022 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:28:20,022 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:28:20,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:28:20,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:28:20,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:28:20,023 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:28:20,023 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:28:20,023 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 12:28:20,030 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:28:20,030 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:28:20,031 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:28:20,031 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:28:20,031 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:28:20,031 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:28:20,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:28:20,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:28:20,037 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:28:20,037 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:28:20,038 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:28:20,038 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:28:20,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:28:20,038 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:28:20,038 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:28:20,039 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:28:20,039 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_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a340dc1e9a375ad2082e9c8cecf3a1a681edcfe0f7220085504fa1991ced3d70 [2024-11-02 12:28:20,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:28:20,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:28:20,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:28:20,453 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:28:20,454 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:28:20,455 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c Unable to find full path for "g++" [2024-11-02 12:28:22,690 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:28:22,938 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:28:22,939 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c [2024-11-02 12:28:22,947 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/data/63e43e63f/ac67fb8ff6e84187bb82cde6cdc895a2/FLAGcddbe2d4c [2024-11-02 12:28:22,961 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/data/63e43e63f/ac67fb8ff6e84187bb82cde6cdc895a2 [2024-11-02 12:28:22,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:28:22,966 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:28:22,967 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:28:22,967 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:28:22,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:28:22,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:28:22" (1/1) ... [2024-11-02 12:28:22,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee8e6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:22, skipping insertion in model container [2024-11-02 12:28:22,976 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:28:22" (1/1) ... [2024-11-02 12:28:22,999 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:28:23,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:28:23,236 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:28:23,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:28:23,279 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:28:23,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:23 WrapperNode [2024-11-02 12:28:23,279 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:28:23,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:28:23,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:28:23,281 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:28:23,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:23" (1/1) ... [2024-11-02 12:28:23,295 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:23" (1/1) ... [2024-11-02 12:28:23,319 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 107 [2024-11-02 12:28:23,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:28:23,323 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:28:23,323 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:28:23,324 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:28:23,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:23" (1/1) ... [2024-11-02 12:28:23,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:23" (1/1) ... [2024-11-02 12:28:23,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:23" (1/1) ... [2024-11-02 12:28:23,339 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:23" (1/1) ... [2024-11-02 12:28:23,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:23" (1/1) ... [2024-11-02 12:28:23,345 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:23" (1/1) ... [2024-11-02 12:28:23,351 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:23" (1/1) ... [2024-11-02 12:28:23,352 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:23" (1/1) ... [2024-11-02 12:28:23,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:28:23,356 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:28:23,356 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:28:23,356 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:28:23,357 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:23" (1/1) ... [2024-11-02 12:28:23,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:28:23,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:28:23,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:28:23,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:28:23,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:28:23,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:28:23,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:28:23,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:28:23,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-02 12:28:23,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-02 12:28:23,514 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:28:23,516 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:28:23,930 INFO L? ?]: Removed 68 outVars from TransFormulas that were not future-live. [2024-11-02 12:28:23,930 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:28:24,029 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:28:24,031 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 12:28:24,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:28:24 BoogieIcfgContainer [2024-11-02 12:28:24,032 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:28:24,034 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:28:24,034 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:28:24,038 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:28:24,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:28:22" (1/3) ... [2024-11-02 12:28:24,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1ce95e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:28:24, skipping insertion in model container [2024-11-02 12:28:24,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:23" (2/3) ... [2024-11-02 12:28:24,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1ce95e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:28:24, skipping insertion in model container [2024-11-02 12:28:24,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:28:24" (3/3) ... [2024-11-02 12:28:24,041 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound10.c [2024-11-02 12:28:24,061 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:28:24,061 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-11-02 12:28:24,133 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:28:24,140 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;@6675324, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:28:24,141 INFO L334 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2024-11-02 12:28:24,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 43 states have (on average 1.930232558139535) internal successors, (83), 77 states have internal predecessors, (83), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-02 12:28:24,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-02 12:28:24,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:24,153 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-02 12:28:24,154 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-02 12:28:24,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:24,160 INFO L85 PathProgramCache]: Analyzing trace with hash 184961, now seen corresponding path program 1 times [2024-11-02 12:28:24,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:24,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74139543] [2024-11-02 12:28:24,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:24,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:24,477 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 12:28:24,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:24,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74139543] [2024-11-02 12:28:24,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74139543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:24,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:24,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:28:24,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373196840] [2024-11-02 12:28:24,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:24,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:28:24,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:24,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:28:24,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:28:24,526 INFO L87 Difference]: Start difference. First operand has 86 states, 43 states have (on average 1.930232558139535) internal successors, (83), 77 states have internal predecessors, (83), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 12:28:24,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:24,706 INFO L93 Difference]: Finished difference Result 175 states and 201 transitions. [2024-11-02 12:28:24,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:28:24,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2024-11-02 12:28:24,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:24,731 INFO L225 Difference]: With dead ends: 175 [2024-11-02 12:28:24,731 INFO L226 Difference]: Without dead ends: 87 [2024-11-02 12:28:24,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:28:24,746 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 4 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:24,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 260 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:28:24,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-02 12:28:24,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-02 12:28:24,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 46 states have (on average 1.8043478260869565) internal successors, (83), 79 states have internal predecessors, (83), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:28:24,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2024-11-02 12:28:24,853 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 3 [2024-11-02 12:28:24,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:24,854 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2024-11-02 12:28:24,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 12:28:24,855 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2024-11-02 12:28:24,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:28:24,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:24,855 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 12:28:24,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:28:24,856 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-02 12:28:24,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:24,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1215253681, now seen corresponding path program 1 times [2024-11-02 12:28:24,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:24,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704971740] [2024-11-02 12:28:24,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:24,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:28:24,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1624949329] [2024-11-02 12:28:24,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:24,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:28:24,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:28:24,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:28:24,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:28:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:24,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:28:24,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:28:24,992 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 12:28:24,992 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:28:24,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:24,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704971740] [2024-11-02 12:28:24,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:28:24,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624949329] [2024-11-02 12:28:24,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624949329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:24,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:24,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:28:25,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083215562] [2024-11-02 12:28:25,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:25,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:28:25,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:25,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:28:25,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:25,002 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 12:28:25,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:25,279 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2024-11-02 12:28:25,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:28:25,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 12:28:25,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:25,281 INFO L225 Difference]: With dead ends: 110 [2024-11-02 12:28:25,281 INFO L226 Difference]: Without dead ends: 108 [2024-11-02 12:28:25,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 12:28:25,284 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 18 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:25,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 155 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:28:25,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-02 12:28:25,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 89. [2024-11-02 12:28:25,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 81 states have internal predecessors, (85), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:28:25,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2024-11-02 12:28:25,303 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 6 [2024-11-02 12:28:25,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:25,304 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2024-11-02 12:28:25,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 12:28:25,305 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2024-11-02 12:28:25,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-02 12:28:25,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:25,307 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:25,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 12:28:25,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:28:25,510 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-02 12:28:25,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:25,512 INFO L85 PathProgramCache]: Analyzing trace with hash -2034502159, now seen corresponding path program 1 times [2024-11-02 12:28:25,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:25,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776191887] [2024-11-02 12:28:25,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:25,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:28:25,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143847704] [2024-11-02 12:28:25,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:25,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:28:25,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:28:25,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:28:25,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:28:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:25,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:28:25,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:28:25,774 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 12:28:25,775 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:28:25,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:25,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776191887] [2024-11-02 12:28:25,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:28:25,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143847704] [2024-11-02 12:28:25,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143847704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:25,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:25,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:28:25,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749578743] [2024-11-02 12:28:25,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:25,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:28:25,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:25,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:28:25,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:25,784 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:28:26,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:26,033 INFO L93 Difference]: Finished difference Result 151 states and 175 transitions. [2024-11-02 12:28:26,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:28:26,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-02 12:28:26,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:26,035 INFO L225 Difference]: With dead ends: 151 [2024-11-02 12:28:26,036 INFO L226 Difference]: Without dead ends: 145 [2024-11-02 12:28:26,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 12:28:26,037 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 51 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:26,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 130 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:28:26,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-02 12:28:26,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 123. [2024-11-02 12:28:26,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 76 states have (on average 1.763157894736842) internal successors, (134), 109 states have internal predecessors, (134), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-02 12:28:26,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 158 transitions. [2024-11-02 12:28:26,059 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 158 transitions. Word has length 11 [2024-11-02 12:28:26,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:26,062 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 158 transitions. [2024-11-02 12:28:26,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:28:26,062 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 158 transitions. [2024-11-02 12:28:26,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-02 12:28:26,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:26,063 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:26,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-02 12:28:26,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:28:26,268 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-02 12:28:26,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:26,268 INFO L85 PathProgramCache]: Analyzing trace with hash -946453133, now seen corresponding path program 1 times [2024-11-02 12:28:26,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:26,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015992905] [2024-11-02 12:28:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:26,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:28:26,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052971881] [2024-11-02 12:28:26,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:26,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:28:26,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:28:26,307 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:28:26,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:28:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:26,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:28:26,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:28:26,456 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 12:28:26,456 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:28:26,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:26,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015992905] [2024-11-02 12:28:26,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:28:26,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052971881] [2024-11-02 12:28:26,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052971881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:26,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:26,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:28:26,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951586910] [2024-11-02 12:28:26,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:26,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:28:26,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:26,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:28:26,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:26,460 INFO L87 Difference]: Start difference. First operand 123 states and 158 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:28:26,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:26,616 INFO L93 Difference]: Finished difference Result 144 states and 165 transitions. [2024-11-02 12:28:26,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:28:26,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-02 12:28:26,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:26,618 INFO L225 Difference]: With dead ends: 144 [2024-11-02 12:28:26,618 INFO L226 Difference]: Without dead ends: 141 [2024-11-02 12:28:26,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 12:28:26,620 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 45 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:26,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 121 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:28:26,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-02 12:28:26,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 124. [2024-11-02 12:28:26,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 110 states have internal predecessors, (133), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-02 12:28:26,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 157 transitions. [2024-11-02 12:28:26,643 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 157 transitions. Word has length 13 [2024-11-02 12:28:26,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:26,643 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 157 transitions. [2024-11-02 12:28:26,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:28:26,644 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 157 transitions. [2024-11-02 12:28:26,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-02 12:28:26,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:26,644 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:26,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-02 12:28:26,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:28:26,845 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-02 12:28:26,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:26,846 INFO L85 PathProgramCache]: Analyzing trace with hash 724724015, now seen corresponding path program 1 times [2024-11-02 12:28:26,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:26,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065573745] [2024-11-02 12:28:26,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:26,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:28:26,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30905729] [2024-11-02 12:28:26,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:26,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:28:26,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:28:26,881 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:28:26,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 12:28:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:26,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:28:26,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:28:27,037 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 12:28:27,037 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:28:27,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:27,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065573745] [2024-11-02 12:28:27,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:28:27,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30905729] [2024-11-02 12:28:27,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30905729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:27,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:27,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:28:27,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511582759] [2024-11-02 12:28:27,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:27,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:28:27,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:27,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:28:27,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:27,045 INFO L87 Difference]: Start difference. First operand 124 states and 157 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:28:27,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:27,342 INFO L93 Difference]: Finished difference Result 144 states and 162 transitions. [2024-11-02 12:28:27,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:28:27,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-02 12:28:27,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:27,344 INFO L225 Difference]: With dead ends: 144 [2024-11-02 12:28:27,344 INFO L226 Difference]: Without dead ends: 137 [2024-11-02 12:28:27,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 12:28:27,345 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 44 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:27,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 124 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:28:27,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-02 12:28:27,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 121. [2024-11-02 12:28:27,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 107 states have internal predecessors, (127), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-02 12:28:27,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 151 transitions. [2024-11-02 12:28:27,358 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 151 transitions. Word has length 14 [2024-11-02 12:28:27,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:27,359 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 151 transitions. [2024-11-02 12:28:27,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:28:27,359 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 151 transitions. [2024-11-02 12:28:27,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 12:28:27,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:27,360 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:27,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-02 12:28:27,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:28:27,561 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-02 12:28:27,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:27,562 INFO L85 PathProgramCache]: Analyzing trace with hash -850449246, now seen corresponding path program 1 times [2024-11-02 12:28:27,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:27,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994480455] [2024-11-02 12:28:27,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:27,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:28:27,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:27,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994480455] [2024-11-02 12:28:27,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994480455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:27,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:27,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:28:27,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144464491] [2024-11-02 12:28:27,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:27,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:28:27,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:27,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:28:27,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:28:27,757 INFO L87 Difference]: Start difference. First operand 121 states and 151 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:28:27,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:27,884 INFO L93 Difference]: Finished difference Result 150 states and 165 transitions. [2024-11-02 12:28:27,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:28:27,885 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-02 12:28:27,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:27,886 INFO L225 Difference]: With dead ends: 150 [2024-11-02 12:28:27,887 INFO L226 Difference]: Without dead ends: 149 [2024-11-02 12:28:27,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:28:27,888 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 62 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:27,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 389 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:28:27,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-02 12:28:27,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2024-11-02 12:28:27,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 75 states have (on average 1.6933333333333334) internal successors, (127), 108 states have internal predecessors, (127), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-02 12:28:27,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 151 transitions. [2024-11-02 12:28:27,900 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 151 transitions. Word has length 20 [2024-11-02 12:28:27,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:27,901 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 151 transitions. [2024-11-02 12:28:27,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:28:27,901 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 151 transitions. [2024-11-02 12:28:27,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-02 12:28:27,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:27,902 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:27,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:28:27,902 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-02 12:28:27,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:27,903 INFO L85 PathProgramCache]: Analyzing trace with hash -594122769, now seen corresponding path program 1 times [2024-11-02 12:28:27,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:27,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611416845] [2024-11-02 12:28:27,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:27,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:28:28,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:28,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611416845] [2024-11-02 12:28:28,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611416845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:28,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:28,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:28:28,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715439364] [2024-11-02 12:28:28,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:28,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:28:28,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:28,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:28:28,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:28:28,096 INFO L87 Difference]: Start difference. First operand 123 states and 151 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:28:28,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:28,220 INFO L93 Difference]: Finished difference Result 211 states and 248 transitions. [2024-11-02 12:28:28,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:28:28,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-11-02 12:28:28,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:28,223 INFO L225 Difference]: With dead ends: 211 [2024-11-02 12:28:28,223 INFO L226 Difference]: Without dead ends: 129 [2024-11-02 12:28:28,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:28:28,225 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 9 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:28,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 399 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:28:28,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-02 12:28:28,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-02 12:28:28,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 80 states have (on average 1.65) internal successors, (132), 113 states have internal predecessors, (132), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-02 12:28:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 156 transitions. [2024-11-02 12:28:28,252 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 156 transitions. Word has length 21 [2024-11-02 12:28:28,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:28,252 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 156 transitions. [2024-11-02 12:28:28,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:28:28,253 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 156 transitions. [2024-11-02 12:28:28,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-02 12:28:28,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:28,253 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:28,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:28:28,256 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-02 12:28:28,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:28,257 INFO L85 PathProgramCache]: Analyzing trace with hash 278672113, now seen corresponding path program 1 times [2024-11-02 12:28:28,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:28,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551949644] [2024-11-02 12:28:28,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:28,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:28:28,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229867284] [2024-11-02 12:28:28,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:28,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:28:28,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:28:28,282 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:28:28,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 12:28:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:28,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:28:28,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:28:28,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:28:28,419 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:28:28,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:28,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551949644] [2024-11-02 12:28:28,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:28:28,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229867284] [2024-11-02 12:28:28,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229867284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:28,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:28,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:28:28,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723091946] [2024-11-02 12:28:28,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:28,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:28:28,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:28,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:28:28,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:28:28,438 INFO L87 Difference]: Start difference. First operand 129 states and 156 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:28:28,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:28,643 INFO L93 Difference]: Finished difference Result 205 states and 275 transitions. [2024-11-02 12:28:28,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:28:28,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2024-11-02 12:28:28,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:28,645 INFO L225 Difference]: With dead ends: 205 [2024-11-02 12:28:28,645 INFO L226 Difference]: Without dead ends: 199 [2024-11-02 12:28:28,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:28:28,646 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 123 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:28,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 88 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:28:28,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-02 12:28:28,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 179. [2024-11-02 12:28:28,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 123 states have (on average 1.6178861788617886) internal successors, (199), 155 states have internal predecessors, (199), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-02 12:28:28,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 239 transitions. [2024-11-02 12:28:28,665 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 239 transitions. Word has length 23 [2024-11-02 12:28:28,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:28,665 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 239 transitions. [2024-11-02 12:28:28,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:28:28,665 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 239 transitions. [2024-11-02 12:28:28,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-02 12:28:28,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:28,666 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:28,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-02 12:28:28,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-02 12:28:28,868 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-02 12:28:28,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:28,868 INFO L85 PathProgramCache]: Analyzing trace with hash 48901001, now seen corresponding path program 1 times [2024-11-02 12:28:28,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:28,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964517135] [2024-11-02 12:28:28,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:28,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:28:28,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226331430] [2024-11-02 12:28:28,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:28,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:28:28,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:28:28,924 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:28:28,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-02 12:28:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:29,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:28:29,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:28:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:28:29,103 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:28:29,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:29,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964517135] [2024-11-02 12:28:29,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:28:29,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226331430] [2024-11-02 12:28:29,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226331430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:29,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:29,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:28:29,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168214531] [2024-11-02 12:28:29,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:29,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:28:29,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:29,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:28:29,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:28:29,108 INFO L87 Difference]: Start difference. First operand 179 states and 239 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:28:29,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:29,474 INFO L93 Difference]: Finished difference Result 258 states and 333 transitions. [2024-11-02 12:28:29,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:28:29,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-02 12:28:29,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:29,477 INFO L225 Difference]: With dead ends: 258 [2024-11-02 12:28:29,477 INFO L226 Difference]: Without dead ends: 255 [2024-11-02 12:28:29,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:28:29,478 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 128 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:29,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 136 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:28:29,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-02 12:28:29,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 216. [2024-11-02 12:28:29,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 155 states have (on average 1.6258064516129032) internal successors, (252), 187 states have internal predecessors, (252), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-02 12:28:29,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 302 transitions. [2024-11-02 12:28:29,507 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 302 transitions. Word has length 24 [2024-11-02 12:28:29,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:29,508 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 302 transitions. [2024-11-02 12:28:29,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:28:29,508 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 302 transitions. [2024-11-02 12:28:29,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-02 12:28:29,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:29,512 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:29,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-02 12:28:29,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:28:29,713 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-02 12:28:29,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:29,713 INFO L85 PathProgramCache]: Analyzing trace with hash -401856115, now seen corresponding path program 1 times [2024-11-02 12:28:29,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:29,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871402776] [2024-11-02 12:28:29,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:29,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:29,850 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-02 12:28:29,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:29,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871402776] [2024-11-02 12:28:29,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871402776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:29,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:29,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:28:29,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774756372] [2024-11-02 12:28:29,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:29,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:28:29,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:29,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:28:29,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:28:29,854 INFO L87 Difference]: Start difference. First operand 216 states and 302 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:28:29,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:29,999 INFO L93 Difference]: Finished difference Result 216 states and 302 transitions. [2024-11-02 12:28:30,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:28:30,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2024-11-02 12:28:30,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:30,003 INFO L225 Difference]: With dead ends: 216 [2024-11-02 12:28:30,003 INFO L226 Difference]: Without dead ends: 214 [2024-11-02 12:28:30,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:28:30,004 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 103 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:30,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 64 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:28:30,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-02 12:28:30,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2024-11-02 12:28:30,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 155 states have (on average 1.5806451612903225) internal successors, (245), 185 states have internal predecessors, (245), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-02 12:28:30,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 295 transitions. [2024-11-02 12:28:30,029 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 295 transitions. Word has length 38 [2024-11-02 12:28:30,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:30,030 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 295 transitions. [2024-11-02 12:28:30,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:28:30,030 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 295 transitions. [2024-11-02 12:28:30,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-02 12:28:30,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:30,033 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:30,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 12:28:30,034 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-02 12:28:30,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:30,035 INFO L85 PathProgramCache]: Analyzing trace with hash 427362428, now seen corresponding path program 1 times [2024-11-02 12:28:30,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:30,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985047412] [2024-11-02 12:28:30,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:30,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:30,170 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-02 12:28:30,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:30,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985047412] [2024-11-02 12:28:30,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985047412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:30,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:30,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:28:30,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752126727] [2024-11-02 12:28:30,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:30,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:28:30,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:30,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:28:30,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:28:30,174 INFO L87 Difference]: Start difference. First operand 214 states and 295 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:28:30,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:30,398 INFO L93 Difference]: Finished difference Result 254 states and 324 transitions. [2024-11-02 12:28:30,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:28:30,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2024-11-02 12:28:30,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:30,401 INFO L225 Difference]: With dead ends: 254 [2024-11-02 12:28:30,401 INFO L226 Difference]: Without dead ends: 252 [2024-11-02 12:28:30,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:28:30,402 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 136 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:30,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 78 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:28:30,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-02 12:28:30,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 218. [2024-11-02 12:28:30,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 159 states have (on average 1.5471698113207548) internal successors, (246), 189 states have internal predecessors, (246), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-02 12:28:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 296 transitions. [2024-11-02 12:28:30,425 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 296 transitions. Word has length 39 [2024-11-02 12:28:30,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:30,425 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 296 transitions. [2024-11-02 12:28:30,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:28:30,426 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 296 transitions. [2024-11-02 12:28:30,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-02 12:28:30,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:30,427 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:30,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-02 12:28:30,427 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-02 12:28:30,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:30,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1621563628, now seen corresponding path program 1 times [2024-11-02 12:28:30,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:30,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666684443] [2024-11-02 12:28:30,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:30,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:30,507 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-02 12:28:30,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:30,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666684443] [2024-11-02 12:28:30,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666684443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:30,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:30,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:28:30,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722674085] [2024-11-02 12:28:30,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:30,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:28:30,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:30,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:28:30,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:30,511 INFO L87 Difference]: Start difference. First operand 218 states and 296 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:28:30,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:30,579 INFO L93 Difference]: Finished difference Result 226 states and 296 transitions. [2024-11-02 12:28:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:28:30,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2024-11-02 12:28:30,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:30,582 INFO L225 Difference]: With dead ends: 226 [2024-11-02 12:28:30,582 INFO L226 Difference]: Without dead ends: 225 [2024-11-02 12:28:30,582 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 12:28:30,583 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 17 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:30,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 138 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:28:30,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-02 12:28:30,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 218. [2024-11-02 12:28:30,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 159 states have (on average 1.5345911949685536) internal successors, (244), 189 states have internal predecessors, (244), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-02 12:28:30,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 294 transitions. [2024-11-02 12:28:30,605 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 294 transitions. Word has length 41 [2024-11-02 12:28:30,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:30,606 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 294 transitions. [2024-11-02 12:28:30,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:28:30,606 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 294 transitions. [2024-11-02 12:28:30,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-02 12:28:30,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:30,607 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:30,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-02 12:28:30,608 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-02 12:28:30,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:30,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1271136500, now seen corresponding path program 1 times [2024-11-02 12:28:30,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:30,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471005585] [2024-11-02 12:28:30,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:30,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:30,721 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-02 12:28:30,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:30,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471005585] [2024-11-02 12:28:30,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471005585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:30,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:30,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:28:30,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282498415] [2024-11-02 12:28:30,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:30,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:28:30,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:30,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:28:30,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:28:30,725 INFO L87 Difference]: Start difference. First operand 218 states and 294 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:28:31,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:31,333 INFO L93 Difference]: Finished difference Result 255 states and 326 transitions. [2024-11-02 12:28:31,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:28:31,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2024-11-02 12:28:31,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:31,335 INFO L225 Difference]: With dead ends: 255 [2024-11-02 12:28:31,335 INFO L226 Difference]: Without dead ends: 254 [2024-11-02 12:28:31,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:28:31,336 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 164 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:31,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 252 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:28:31,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-02 12:28:31,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 218. [2024-11-02 12:28:31,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 159 states have (on average 1.509433962264151) internal successors, (240), 189 states have internal predecessors, (240), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-02 12:28:31,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 290 transitions. [2024-11-02 12:28:31,374 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 290 transitions. Word has length 42 [2024-11-02 12:28:31,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:31,375 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 290 transitions. [2024-11-02 12:28:31,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:28:31,375 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 290 transitions. [2024-11-02 12:28:31,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-02 12:28:31,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:31,377 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:31,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-02 12:28:31,377 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-02 12:28:31,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:31,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1271135218, now seen corresponding path program 1 times [2024-11-02 12:28:31,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:31,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425953780] [2024-11-02 12:28:31,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:31,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-02 12:28:31,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:31,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425953780] [2024-11-02 12:28:31,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425953780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:31,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:31,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:28:31,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480357564] [2024-11-02 12:28:31,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:31,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:28:31,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:31,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:28:31,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:28:31,489 INFO L87 Difference]: Start difference. First operand 218 states and 290 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-02 12:28:31,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:31,605 INFO L93 Difference]: Finished difference Result 365 states and 501 transitions. [2024-11-02 12:28:31,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:28:31,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 42 [2024-11-02 12:28:31,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:31,609 INFO L225 Difference]: With dead ends: 365 [2024-11-02 12:28:31,609 INFO L226 Difference]: Without dead ends: 364 [2024-11-02 12:28:31,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:28:31,611 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 43 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:31,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 193 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:28:31,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-02 12:28:31,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 331. [2024-11-02 12:28:31,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 257 states have (on average 1.5603112840466926) internal successors, (401), 287 states have internal predecessors, (401), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-02 12:28:31,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 481 transitions. [2024-11-02 12:28:31,638 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 481 transitions. Word has length 42 [2024-11-02 12:28:31,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:31,639 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 481 transitions. [2024-11-02 12:28:31,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-02 12:28:31,640 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 481 transitions. [2024-11-02 12:28:31,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-02 12:28:31,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:31,642 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:31,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-02 12:28:31,642 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-02 12:28:31,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:31,643 INFO L85 PathProgramCache]: Analyzing trace with hash 750486230, now seen corresponding path program 1 times [2024-11-02 12:28:31,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:31,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833307082] [2024-11-02 12:28:31,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:31,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:31,727 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-02 12:28:31,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:31,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833307082] [2024-11-02 12:28:31,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833307082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:31,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:31,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:28:31,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703727121] [2024-11-02 12:28:31,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:31,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:28:31,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:31,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:28:31,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:28:31,730 INFO L87 Difference]: Start difference. First operand 331 states and 481 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:28:32,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:32,043 INFO L93 Difference]: Finished difference Result 356 states and 502 transitions. [2024-11-02 12:28:32,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:28:32,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2024-11-02 12:28:32,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:32,046 INFO L225 Difference]: With dead ends: 356 [2024-11-02 12:28:32,047 INFO L226 Difference]: Without dead ends: 354 [2024-11-02 12:28:32,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:28:32,048 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 52 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:32,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 151 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:28:32,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-02 12:28:32,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 335. [2024-11-02 12:28:32,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 261 states have (on average 1.5517241379310345) internal successors, (405), 291 states have internal predecessors, (405), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-02 12:28:32,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 485 transitions. [2024-11-02 12:28:32,073 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 485 transitions. Word has length 43 [2024-11-02 12:28:32,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:32,073 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 485 transitions. [2024-11-02 12:28:32,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:28:32,073 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 485 transitions. [2024-11-02 12:28:32,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-02 12:28:32,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:32,074 INFO L215 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:32,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-02 12:28:32,075 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-02 12:28:32,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:32,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1864331018, now seen corresponding path program 1 times [2024-11-02 12:28:32,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:32,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993090405] [2024-11-02 12:28:32,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:32,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-02 12:28:32,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:32,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993090405] [2024-11-02 12:28:32,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993090405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:28:32,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380950983] [2024-11-02 12:28:32,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:32,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:28:32,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:28:32,221 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:28:32,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-02 12:28:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:32,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:28:32,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:28:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-02 12:28:32,462 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:28:32,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380950983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:32,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:28:32,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2024-11-02 12:28:32,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514107961] [2024-11-02 12:28:32,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:32,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:28:32,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:32,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:28:32,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-02 12:28:32,465 INFO L87 Difference]: Start difference. First operand 335 states and 485 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:28:32,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:32,571 INFO L93 Difference]: Finished difference Result 335 states and 485 transitions. [2024-11-02 12:28:32,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:28:32,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2024-11-02 12:28:32,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:32,573 INFO L225 Difference]: With dead ends: 335 [2024-11-02 12:28:32,573 INFO L226 Difference]: Without dead ends: 333 [2024-11-02 12:28:32,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-02 12:28:32,574 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 113 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:32,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 288 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:28:32,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-02 12:28:32,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2024-11-02 12:28:32,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 261 states have (on average 1.5057471264367817) internal successors, (393), 289 states have internal predecessors, (393), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-02 12:28:32,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 473 transitions. [2024-11-02 12:28:32,607 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 473 transitions. Word has length 46 [2024-11-02 12:28:32,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:32,607 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 473 transitions. [2024-11-02 12:28:32,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:28:32,608 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 473 transitions. [2024-11-02 12:28:32,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-02 12:28:32,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:32,609 INFO L215 NwaCegarLoop]: trace histogram [5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:32,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-02 12:28:32,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:28:32,810 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-02 12:28:32,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:32,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1959686662, now seen corresponding path program 1 times [2024-11-02 12:28:32,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:32,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756445135] [2024-11-02 12:28:32,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:32,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:32,948 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-02 12:28:32,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:32,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756445135] [2024-11-02 12:28:32,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756445135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:28:32,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883507625] [2024-11-02 12:28:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:32,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:28:32,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:28:32,951 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:28:32,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-02 12:28:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:33,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:28:33,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:28:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-02 12:28:33,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:28:33,312 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-02 12:28:33,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883507625] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 12:28:33,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-02 12:28:33,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 18 [2024-11-02 12:28:33,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909213011] [2024-11-02 12:28:33,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:33,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:28:33,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:33,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:28:33,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2024-11-02 12:28:33,314 INFO L87 Difference]: Start difference. First operand 333 states and 473 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:28:33,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:33,513 INFO L93 Difference]: Finished difference Result 368 states and 495 transitions. [2024-11-02 12:28:33,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-02 12:28:33,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 47 [2024-11-02 12:28:33,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:33,516 INFO L225 Difference]: With dead ends: 368 [2024-11-02 12:28:33,516 INFO L226 Difference]: Without dead ends: 366 [2024-11-02 12:28:33,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2024-11-02 12:28:33,517 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 57 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:33,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 421 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:28:33,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-02 12:28:33,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 339. [2024-11-02 12:28:33,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 264 states have (on average 1.4696969696969697) internal successors, (388), 292 states have internal predecessors, (388), 40 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-02 12:28:33,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 468 transitions. [2024-11-02 12:28:33,548 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 468 transitions. Word has length 47 [2024-11-02 12:28:33,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:33,548 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 468 transitions. [2024-11-02 12:28:33,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:28:33,549 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 468 transitions. [2024-11-02 12:28:33,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-02 12:28:33,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:33,552 INFO L215 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:33,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-02 12:28:33,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-02 12:28:33,753 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-02 12:28:33,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:33,753 INFO L85 PathProgramCache]: Analyzing trace with hash -2063204810, now seen corresponding path program 1 times [2024-11-02 12:28:33,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:33,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68037470] [2024-11-02 12:28:33,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:33,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:33,912 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-02 12:28:33,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:33,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68037470] [2024-11-02 12:28:33,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68037470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:28:33,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112301963] [2024-11-02 12:28:33,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:33,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:28:33,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:28:33,915 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:28:33,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-02 12:28:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:33,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 12:28:33,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:28:34,070 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-02 12:28:34,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:28:34,224 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-02 12:28:34,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112301963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:28:34,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [850361348] [2024-11-02 12:28:34,247 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2024-11-02 12:28:34,247 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:28:34,251 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:28:34,257 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:28:34,258 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:28:42,032 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2024-11-02 12:28:42,033 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:28:46,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [850361348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:46,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:28:46,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9, 7, 8] total 29 [2024-11-02 12:28:46,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359916739] [2024-11-02 12:28:46,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:46,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-02 12:28:46,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:46,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-02 12:28:46,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2024-11-02 12:28:46,698 INFO L87 Difference]: Start difference. First operand 339 states and 468 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:28:48,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:48,636 INFO L93 Difference]: Finished difference Result 476 states and 629 transitions. [2024-11-02 12:28:48,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-02 12:28:48,636 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2024-11-02 12:28:48,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:48,640 INFO L225 Difference]: With dead ends: 476 [2024-11-02 12:28:48,640 INFO L226 Difference]: Without dead ends: 320 [2024-11-02 12:28:48,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 106 SyntacticMatches, 21 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=182, Invalid=748, Unknown=0, NotChecked=0, Total=930 [2024-11-02 12:28:48,644 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 26 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:48,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 186 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-02 12:28:48,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-02 12:28:48,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 303. [2024-11-02 12:28:48,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 230 states have (on average 1.4130434782608696) internal successors, (325), 259 states have internal predecessors, (325), 36 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-02 12:28:48,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 397 transitions. [2024-11-02 12:28:48,680 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 397 transitions. Word has length 49 [2024-11-02 12:28:48,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:48,680 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 397 transitions. [2024-11-02 12:28:48,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:28:48,681 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 397 transitions. [2024-11-02 12:28:48,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-02 12:28:48,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:48,682 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:48,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-02 12:28:48,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-02 12:28:48,884 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-02 12:28:48,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:48,889 INFO L85 PathProgramCache]: Analyzing trace with hash 368831322, now seen corresponding path program 1 times [2024-11-02 12:28:48,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:48,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603513002] [2024-11-02 12:28:48,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:48,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:49,063 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-02 12:28:49,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:49,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603513002] [2024-11-02 12:28:49,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603513002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:28:49,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803462753] [2024-11-02 12:28:49,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:49,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:28:49,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:28:49,066 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:28:49,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df56f80-cd9b-43b7-a12e-67fa1833c4c0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-02 12:28:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:49,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:28:49,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:28:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-02 12:28:49,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:28:49,410 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-02 12:28:49,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803462753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:28:49,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [183723864] [2024-11-02 12:28:49,414 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2024-11-02 12:28:49,414 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:28:49,415 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:28:49,415 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:28:49,415 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs