./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/sum_natnum.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/sum_natnum.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff2ea40d6d25fb86e36a6b6b626bedee46fbbe211877b096a26da0b150125568 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:27:11,011 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:27:11,122 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:27:11,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:27:11,129 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:27:11,166 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:27:11,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:27:11,171 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:27:11,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:27:11,172 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:27:11,172 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:27:11,172 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:27:11,172 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:27:11,172 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:27:11,173 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:27:11,173 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:27:11,173 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:27:11,173 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:27:11,173 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:27:11,173 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:27:11,173 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:27:11,173 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:27:11,174 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:27:11,175 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:27:11,175 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:27:11,177 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:27:11,177 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:27:11,178 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:27:11,178 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:27:11,178 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:27:11,178 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:27:11,178 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:27:11,178 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:27:11,179 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:27:11,179 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:27:11,179 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:27:11,179 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:27:11,179 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:27:11,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:27:11,179 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:27:11,180 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:27:11,180 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:27:11,180 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:27:11,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:27:11,180 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:27:11,180 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:27:11,180 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:27:11,180 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E 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 ! call(reach_error())) ) 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 -> ff2ea40d6d25fb86e36a6b6b626bedee46fbbe211877b096a26da0b150125568 [2024-11-14 03:27:11,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:27:11,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:27:11,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:27:11,684 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:27:11,684 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:27:11,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/loops-crafted-1/sum_natnum.c Unable to find full path for "g++" [2024-11-14 03:27:14,097 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:27:14,420 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:27:14,421 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/sv-benchmarks/c/loops-crafted-1/sum_natnum.c [2024-11-14 03:27:14,431 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/data/ffa0aef28/f30aa38f281f43dcb73a2ee9083b6fbc/FLAGcc8fa5d9e [2024-11-14 03:27:14,461 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/data/ffa0aef28/f30aa38f281f43dcb73a2ee9083b6fbc [2024-11-14 03:27:14,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:27:14,472 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:27:14,474 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:27:14,475 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:27:14,481 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:27:14,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:27:14" (1/1) ... [2024-11-14 03:27:14,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32868294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:27:14, skipping insertion in model container [2024-11-14 03:27:14,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:27:14" (1/1) ... [2024-11-14 03:27:14,507 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:27:14,766 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/sv-benchmarks/c/loops-crafted-1/sum_natnum.c[458,471] [2024-11-14 03:27:14,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:27:14,807 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:27:14,824 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/sv-benchmarks/c/loops-crafted-1/sum_natnum.c[458,471] [2024-11-14 03:27:14,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:27:14,852 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:27:14,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:27:14 WrapperNode [2024-11-14 03:27:14,853 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:27:14,856 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:27:14,856 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:27:14,857 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:27:14,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:27:14" (1/1) ... [2024-11-14 03:27:14,877 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:27:14" (1/1) ... [2024-11-14 03:27:14,899 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2024-11-14 03:27:14,900 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:27:14,901 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:27:14,901 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:27:14,901 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:27:14,910 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:27:14" (1/1) ... [2024-11-14 03:27:14,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:27:14" (1/1) ... [2024-11-14 03:27:14,913 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:27:14" (1/1) ... [2024-11-14 03:27:14,914 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:27:14" (1/1) ... [2024-11-14 03:27:14,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:27:14" (1/1) ... [2024-11-14 03:27:14,922 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:27:14" (1/1) ... [2024-11-14 03:27:14,926 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:27:14" (1/1) ... [2024-11-14 03:27:14,927 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:27:14" (1/1) ... [2024-11-14 03:27:14,929 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:27:14,930 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:27:14,930 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:27:14,930 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:27:14,935 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:27:14" (1/1) ... [2024-11-14 03:27:14,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:27:14,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:27:14,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:27:14,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:27:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:27:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:27:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:27:15,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:27:15,102 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:27:15,105 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:27:15,290 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-14 03:27:15,291 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:27:15,355 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:27:15,356 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 03:27:15,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:27:15 BoogieIcfgContainer [2024-11-14 03:27:15,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:27:15,361 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:27:15,361 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:27:15,369 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:27:15,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:27:14" (1/3) ... [2024-11-14 03:27:15,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba25228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:27:15, skipping insertion in model container [2024-11-14 03:27:15,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:27:14" (2/3) ... [2024-11-14 03:27:15,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba25228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:27:15, skipping insertion in model container [2024-11-14 03:27:15,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:27:15" (3/3) ... [2024-11-14 03:27:15,375 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_natnum.c [2024-11-14 03:27:15,400 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:27:15,403 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG sum_natnum.c that has 1 procedures, 7 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 03:27:15,497 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:27:15,519 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;@7c664e44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:27:15,521 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:27:15,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:27:15,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 03:27:15,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:27:15,539 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 03:27:15,540 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:27:15,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:27:15,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1849510, now seen corresponding path program 1 times [2024-11-14 03:27:15,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:27:15,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956453292] [2024-11-14 03:27:15,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:27:15,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:27:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:27:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:27:15,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:27:15,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956453292] [2024-11-14 03:27:15,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956453292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:27:15,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:27:15,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:27:15,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653686117] [2024-11-14 03:27:15,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:27:15,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:27:15,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:27:15,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:27:15,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:27:15,993 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:27:16,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:27:16,029 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2024-11-14 03:27:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:27:16,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 03:27:16,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:27:16,041 INFO L225 Difference]: With dead ends: 13 [2024-11-14 03:27:16,042 INFO L226 Difference]: Without dead ends: 6 [2024-11-14 03:27:16,046 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 [2024-11-14 03:27:16,049 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:27:16,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:27:16,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2024-11-14 03:27:16,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2024-11-14 03:27:16,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2024-11-14 03:27:16,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2024-11-14 03:27:16,089 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2024-11-14 03:27:16,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:27:16,090 INFO L471 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2024-11-14 03:27:16,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:27:16,093 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2024-11-14 03:27:16,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 03:27:16,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:27:16,093 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 03:27:16,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:27:16,094 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:27:16,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:27:16,095 INFO L85 PathProgramCache]: Analyzing trace with hash 56664950, now seen corresponding path program 1 times [2024-11-14 03:27:16,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:27:16,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869646552] [2024-11-14 03:27:16,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:27:16,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:27:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:27:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:27:16,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:27:16,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869646552] [2024-11-14 03:27:16,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869646552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:27:16,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47669537] [2024-11-14 03:27:16,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:27:16,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:27:16,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:27:16,260 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:27:16,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:27:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:27:16,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:27:16,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:27:16,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:27:16,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:27:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:27:16,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47669537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:27:16,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1086165112] [2024-11-14 03:27:16,583 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2024-11-14 03:27:16,584 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:27:16,588 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:27:16,594 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:27:16,595 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:27:17,023 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:27:17,175 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '70#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~sum~0#1_22| Int)) (and (not (= (mod |v_ULTIMATE.start_main_~sum~0#1_22| 18446744073709551616) 800020000)) (<= 0 |v_ULTIMATE.start_main_~sum~0#1_22|))) (= ~SIZE~0 40000))' at error location [2024-11-14 03:27:17,176 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:27:17,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:27:17,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-14 03:27:17,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425717524] [2024-11-14 03:27:17,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:27:17,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:27:17,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:27:17,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:27:17,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:27:17,181 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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) [2024-11-14 03:27:17,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:27:17,216 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2024-11-14 03:27:17,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:27:17,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-14 03:27:17,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:27:17,218 INFO L225 Difference]: With dead ends: 12 [2024-11-14 03:27:17,218 INFO L226 Difference]: Without dead ends: 9 [2024-11-14 03:27:17,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:27:17,220 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:27:17,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:27:17,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-11-14 03:27:17,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-11-14 03:27:17,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:27:17,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-14 03:27:17,224 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-14 03:27:17,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:27:17,224 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-14 03:27:17,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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) [2024-11-14 03:27:17,225 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-14 03:27:17,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 03:27:17,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:27:17,225 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2024-11-14 03:27:17,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:27:17,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-14 03:27:17,430 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:27:17,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:27:17,430 INFO L85 PathProgramCache]: Analyzing trace with hash -481792858, now seen corresponding path program 2 times [2024-11-14 03:27:17,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:27:17,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028664927] [2024-11-14 03:27:17,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:27:17,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:27:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:27:17,746 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:27:17,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:27:17,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028664927] [2024-11-14 03:27:17,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028664927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:27:17,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507881556] [2024-11-14 03:27:17,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:27:17,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:27:17,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:27:17,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:27:17,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:27:17,849 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 03:27:17,849 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:27:17,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:27:17,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:27:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:27:17,998 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:27:18,141 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:27:18,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507881556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:27:18,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1621692828] [2024-11-14 03:27:18,144 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2024-11-14 03:27:18,148 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:27:18,148 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:27:18,149 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:27:18,149 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:27:18,359 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:27:18,502 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '163#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~sum~0#1_30| Int)) (and (not (= (mod |v_ULTIMATE.start_main_~sum~0#1_30| 18446744073709551616) 800020000)) (<= 0 |v_ULTIMATE.start_main_~sum~0#1_30|))) (= ~SIZE~0 40000))' at error location [2024-11-14 03:27:18,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:27:18,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:27:18,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-14 03:27:18,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343893568] [2024-11-14 03:27:18,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:27:18,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 03:27:18,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:27:18,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 03:27:18,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=242, Unknown=0, NotChecked=0, Total=380 [2024-11-14 03:27:18,505 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:27:18,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:27:18,548 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-14 03:27:18,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 03:27:18,549 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-14 03:27:18,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:27:18,550 INFO L225 Difference]: With dead ends: 18 [2024-11-14 03:27:18,550 INFO L226 Difference]: Without dead ends: 15 [2024-11-14 03:27:18,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=242, Unknown=0, NotChecked=0, Total=380 [2024-11-14 03:27:18,552 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:27:18,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:27:18,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-14 03:27:18,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-14 03:27:18,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:27:18,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-11-14 03:27:18,557 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2024-11-14 03:27:18,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:27:18,557 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-11-14 03:27:18,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:27:18,558 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-11-14 03:27:18,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 03:27:18,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:27:18,558 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2024-11-14 03:27:18,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 03:27:18,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-14 03:27:18,763 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:27:18,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:27:18,763 INFO L85 PathProgramCache]: Analyzing trace with hash -942802266, now seen corresponding path program 3 times [2024-11-14 03:27:18,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:27:18,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422462816] [2024-11-14 03:27:18,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:27:18,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:27:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:27:19,325 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:27:19,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:27:19,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422462816] [2024-11-14 03:27:19,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422462816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:27:19,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504914641] [2024-11-14 03:27:19,326 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 03:27:19,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:27:19,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:27:19,330 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:27:19,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:27:19,419 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 03:27:19,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:27:19,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 03:27:19,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:27:19,765 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:27:19,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:27:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:27:20,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504914641] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:27:20,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1958116804] [2024-11-14 03:27:20,269 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2024-11-14 03:27:20,269 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:27:20,273 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:27:20,274 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:27:20,274 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:27:20,446 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:27:20,618 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '334#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~sum~0#1_44| Int)) (and (<= 0 |v_ULTIMATE.start_main_~sum~0#1_44|) (not (= (mod |v_ULTIMATE.start_main_~sum~0#1_44| 18446744073709551616) 800020000)))) (= ~SIZE~0 40000))' at error location [2024-11-14 03:27:20,618 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:27:20,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:27:20,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2024-11-14 03:27:20,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069852847] [2024-11-14 03:27:20,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:27:20,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 03:27:20,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:27:20,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 03:27:20,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=558, Invalid=848, Unknown=0, NotChecked=0, Total=1406 [2024-11-14 03:27:20,623 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 34 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:27:20,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:27:20,716 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2024-11-14 03:27:20,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-14 03:27:20,717 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 34 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-14 03:27:20,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:27:20,718 INFO L225 Difference]: With dead ends: 30 [2024-11-14 03:27:20,718 INFO L226 Difference]: Without dead ends: 27 [2024-11-14 03:27:20,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=558, Invalid=848, Unknown=0, NotChecked=0, Total=1406 [2024-11-14 03:27:20,720 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:27:20,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:27:20,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-14 03:27:20,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-14 03:27:20,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:27:20,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2024-11-14 03:27:20,729 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2024-11-14 03:27:20,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:27:20,729 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2024-11-14 03:27:20,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 34 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:27:20,730 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2024-11-14 03:27:20,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-14 03:27:20,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:27:20,731 INFO L215 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1] [2024-11-14 03:27:20,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 03:27:20,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-14 03:27:20,932 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:27:20,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:27:20,932 INFO L85 PathProgramCache]: Analyzing trace with hash 470914726, now seen corresponding path program 4 times [2024-11-14 03:27:20,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:27:20,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985991153] [2024-11-14 03:27:20,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:27:20,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:27:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:27:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:27:22,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:27:22,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985991153] [2024-11-14 03:27:22,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985991153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:27:22,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105936539] [2024-11-14 03:27:22,066 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 03:27:22,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:27:22,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:27:22,069 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:27:22,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:27:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:27:22,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 03:27:22,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:27:23,113 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:27:23,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:27:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:27:24,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105936539] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:27:24,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [307930065] [2024-11-14 03:27:24,626 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2024-11-14 03:27:24,626 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:27:24,626 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:27:24,627 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:27:24,627 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:27:24,739 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:27:24,908 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '661#(and (<= 1 |#StackHeapBarrier|) (= ~SIZE~0 40000) (exists ((|v_ULTIMATE.start_main_~sum~0#1_70| Int)) (and (not (= 800020000 (mod |v_ULTIMATE.start_main_~sum~0#1_70| 18446744073709551616))) (<= 0 |v_ULTIMATE.start_main_~sum~0#1_70|))))' at error location [2024-11-14 03:27:24,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:27:24,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:27:24,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 70 [2024-11-14 03:27:24,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011150564] [2024-11-14 03:27:24,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:27:24,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-14 03:27:24,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:27:24,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-14 03:27:24,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2262, Invalid=3140, Unknown=0, NotChecked=0, Total=5402 [2024-11-14 03:27:24,917 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 71 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 70 states have internal predecessors, (74), 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) [2024-11-14 03:27:25,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:27:25,078 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2024-11-14 03:27:25,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-14 03:27:25,079 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 70 states have internal predecessors, (74), 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 26 [2024-11-14 03:27:25,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:27:25,080 INFO L225 Difference]: With dead ends: 54 [2024-11-14 03:27:25,081 INFO L226 Difference]: Without dead ends: 51 [2024-11-14 03:27:25,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2384 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2262, Invalid=3140, Unknown=0, NotChecked=0, Total=5402 [2024-11-14 03:27:25,085 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:27:25,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:27:25,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-14 03:27:25,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-14 03:27:25,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 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) [2024-11-14 03:27:25,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2024-11-14 03:27:25,098 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 26 [2024-11-14 03:27:25,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:27:25,099 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2024-11-14 03:27:25,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 70 states have internal predecessors, (74), 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) [2024-11-14 03:27:25,099 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2024-11-14 03:27:25,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 03:27:25,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:27:25,101 INFO L215 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1] [2024-11-14 03:27:25,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 03:27:25,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:27:25,302 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:27:25,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:27:25,302 INFO L85 PathProgramCache]: Analyzing trace with hash -436547930, now seen corresponding path program 5 times [2024-11-14 03:27:25,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:27:25,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993266856] [2024-11-14 03:27:25,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:27:25,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:27:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:27:28,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:27:28,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:27:28,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993266856] [2024-11-14 03:27:28,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993266856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:27:28,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215834713] [2024-11-14 03:27:28,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:27:28,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:27:28,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:27:28,363 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:27:28,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 03:27:28,506 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-11-14 03:27:28,507 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:27:28,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-14 03:27:28,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:27:30,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:27:30,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:27:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:27:35,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215834713] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:27:35,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [111274864] [2024-11-14 03:27:35,487 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2024-11-14 03:27:35,487 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:27:35,488 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:27:35,488 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:27:35,488 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:27:35,555 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:27:35,700 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1300#(and (<= 1 |#StackHeapBarrier|) (= ~SIZE~0 40000) (exists ((|v_ULTIMATE.start_main_~sum~0#1_120| Int)) (and (not (= 800020000 (mod |v_ULTIMATE.start_main_~sum~0#1_120| 18446744073709551616))) (<= 0 |v_ULTIMATE.start_main_~sum~0#1_120|))))' at error location [2024-11-14 03:27:35,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:27:35,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:27:35,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 142 [2024-11-14 03:27:35,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605217421] [2024-11-14 03:27:35,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:27:35,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2024-11-14 03:27:35,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:27:35,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2024-11-14 03:27:35,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9126, Invalid=12044, Unknown=0, NotChecked=0, Total=21170 [2024-11-14 03:27:35,715 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 143 states, 143 states have (on average 1.020979020979021) internal successors, (146), 142 states have internal predecessors, (146), 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) [2024-11-14 03:27:36,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:27:36,047 INFO L93 Difference]: Finished difference Result 102 states and 149 transitions. [2024-11-14 03:27:36,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-14 03:27:36,048 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 1.020979020979021) internal successors, (146), 142 states have internal predecessors, (146), 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 50 [2024-11-14 03:27:36,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:27:36,050 INFO L225 Difference]: With dead ends: 102 [2024-11-14 03:27:36,050 INFO L226 Difference]: Without dead ends: 99 [2024-11-14 03:27:36,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9392 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=9126, Invalid=12044, Unknown=0, NotChecked=0, Total=21170 [2024-11-14 03:27:36,057 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:27:36,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:27:36,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-14 03:27:36,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-14 03:27:36,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.010204081632653) internal successors, (99), 98 states have internal predecessors, (99), 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) [2024-11-14 03:27:36,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2024-11-14 03:27:36,086 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 50 [2024-11-14 03:27:36,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:27:36,087 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2024-11-14 03:27:36,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 1.020979020979021) internal successors, (146), 142 states have internal predecessors, (146), 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) [2024-11-14 03:27:36,087 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2024-11-14 03:27:36,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-14 03:27:36,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:27:36,090 INFO L215 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1] [2024-11-14 03:27:36,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 03:27:36,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-14 03:27:36,296 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:27:36,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:27:36,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1666530982, now seen corresponding path program 6 times [2024-11-14 03:27:36,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:27:36,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58502794] [2024-11-14 03:27:36,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:27:36,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:27:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:27:45,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:27:45,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:27:45,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58502794] [2024-11-14 03:27:45,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58502794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:27:45,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348294826] [2024-11-14 03:27:45,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 03:27:45,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:27:45,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:27:45,678 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:27:45,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 03:27:45,845 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 03:27:45,845 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:27:45,850 INFO L255 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-14 03:27:45,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:27:52,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:27:52,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:28:08,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:28:08,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348294826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:28:08,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1601058326] [2024-11-14 03:28:08,858 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2024-11-14 03:28:08,859 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:28:08,859 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:28:08,859 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:28:08,859 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:28:08,917 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:28:09,257 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2563#(and (exists ((|v_ULTIMATE.start_main_~sum~0#1_218| Int)) (and (not (= (mod |v_ULTIMATE.start_main_~sum~0#1_218| 18446744073709551616) 800020000)) (<= 0 |v_ULTIMATE.start_main_~sum~0#1_218|))) (<= 1 |#StackHeapBarrier|) (= ~SIZE~0 40000))' at error location [2024-11-14 03:28:09,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:28:09,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:28:09,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 286 [2024-11-14 03:28:09,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499578704] [2024-11-14 03:28:09,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:28:09,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 287 states [2024-11-14 03:28:09,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:28:09,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 287 interpolants. [2024-11-14 03:28:09,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36678, Invalid=47132, Unknown=0, NotChecked=0, Total=83810 [2024-11-14 03:28:09,288 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand has 287 states, 287 states have (on average 1.0104529616724738) internal successors, (290), 286 states have internal predecessors, (290), 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) [2024-11-14 03:28:10,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:28:10,303 INFO L93 Difference]: Finished difference Result 198 states and 293 transitions. [2024-11-14 03:28:10,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-14 03:28:10,304 INFO L78 Accepts]: Start accepts. Automaton has has 287 states, 287 states have (on average 1.0104529616724738) internal successors, (290), 286 states have internal predecessors, (290), 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 98 [2024-11-14 03:28:10,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:28:10,307 INFO L225 Difference]: With dead ends: 198 [2024-11-14 03:28:10,307 INFO L226 Difference]: Without dead ends: 195 [2024-11-14 03:28:10,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37232 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=36678, Invalid=47132, Unknown=0, NotChecked=0, Total=83810 [2024-11-14 03:28:10,312 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:28:10,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:28:10,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-14 03:28:10,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2024-11-14 03:28:10,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.0051546391752577) internal successors, (195), 194 states have internal predecessors, (195), 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) [2024-11-14 03:28:10,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2024-11-14 03:28:10,341 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 98 [2024-11-14 03:28:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:28:10,342 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2024-11-14 03:28:10,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 287 states, 287 states have (on average 1.0104529616724738) internal successors, (290), 286 states have internal predecessors, (290), 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) [2024-11-14 03:28:10,343 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2024-11-14 03:28:10,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-14 03:28:10,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:28:10,349 INFO L215 NwaCegarLoop]: trace histogram [190, 1, 1, 1, 1] [2024-11-14 03:28:10,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 03:28:10,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-14 03:28:10,550 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:28:10,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:28:10,550 INFO L85 PathProgramCache]: Analyzing trace with hash 606740134, now seen corresponding path program 7 times [2024-11-14 03:28:10,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:28:10,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725041562] [2024-11-14 03:28:10,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:28:10,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:28:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:28:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:28:40,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:28:40,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725041562] [2024-11-14 03:28:40,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725041562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:28:40,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382320856] [2024-11-14 03:28:40,191 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 03:28:40,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:28:40,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:28:40,193 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:28:40,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 03:28:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:28:40,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 193 conjuncts are in the unsatisfiable core [2024-11-14 03:28:40,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:29:03,445 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:29:03,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:30:04,275 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:30:04,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382320856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:30:04,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [225313987] [2024-11-14 03:30:04,277 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2024-11-14 03:30:04,277 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:30:04,277 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:30:04,277 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:30:04,277 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:30:04,325 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:30:04,774 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5074#(and (<= 1 |#StackHeapBarrier|) (= ~SIZE~0 40000) (exists ((|v_ULTIMATE.start_main_~sum~0#1_412| Int)) (and (<= 0 |v_ULTIMATE.start_main_~sum~0#1_412|) (not (= (mod |v_ULTIMATE.start_main_~sum~0#1_412| 18446744073709551616) 800020000)))))' at error location [2024-11-14 03:30:04,774 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:30:04,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:30:04,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 574 [2024-11-14 03:30:04,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784327081] [2024-11-14 03:30:04,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:30:04,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 575 states [2024-11-14 03:30:04,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:30:04,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 575 interpolants. [2024-11-14 03:30:04,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147078, Invalid=186428, Unknown=0, NotChecked=0, Total=333506 [2024-11-14 03:30:04,824 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand has 575 states, 575 states have (on average 1.0052173913043478) internal successors, (578), 574 states have internal predecessors, (578), 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) [2024-11-14 03:30:08,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:30:08,884 INFO L93 Difference]: Finished difference Result 390 states and 581 transitions. [2024-11-14 03:30:08,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2024-11-14 03:30:08,885 INFO L78 Accepts]: Start accepts. Automaton has has 575 states, 575 states have (on average 1.0052173913043478) internal successors, (578), 574 states have internal predecessors, (578), 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 194 [2024-11-14 03:30:08,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:30:08,889 INFO L225 Difference]: With dead ends: 390 [2024-11-14 03:30:08,892 INFO L226 Difference]: Without dead ends: 387 [2024-11-14 03:30:08,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 576 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148208 ImplicationChecksByTransitivity, 104.2s TimeCoverageRelationStatistics Valid=147078, Invalid=186428, Unknown=0, NotChecked=0, Total=333506 [2024-11-14 03:30:08,904 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:30:08,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:30:08,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-11-14 03:30:08,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2024-11-14 03:30:08,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.0025906735751295) internal successors, (387), 386 states have internal predecessors, (387), 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) [2024-11-14 03:30:08,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2024-11-14 03:30:08,967 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 194 [2024-11-14 03:30:08,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:30:08,970 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2024-11-14 03:30:08,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 575 states, 575 states have (on average 1.0052173913043478) internal successors, (578), 574 states have internal predecessors, (578), 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) [2024-11-14 03:30:08,971 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2024-11-14 03:30:08,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2024-11-14 03:30:08,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:30:08,982 INFO L215 NwaCegarLoop]: trace histogram [382, 1, 1, 1, 1] [2024-11-14 03:30:09,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 03:30:09,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-14 03:30:09,183 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:30:09,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:30:09,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1101799770, now seen corresponding path program 8 times [2024-11-14 03:30:09,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:30:09,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211033454] [2024-11-14 03:30:09,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:30:09,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:30:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:31:47,838 INFO L134 CoverageAnalysis]: Checked inductivity of 73153 backedges. 0 proven. 73153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:31:47,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:31:47,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211033454] [2024-11-14 03:31:47,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211033454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:31:47,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953452500] [2024-11-14 03:31:47,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:31:47,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:31:47,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:31:47,842 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:31:47,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 03:31:49,730 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 192 check-sat command(s) [2024-11-14 03:31:49,730 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:31:49,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 1943 conjuncts, 385 conjuncts are in the unsatisfiable core [2024-11-14 03:31:49,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:33:03,504 INFO L134 CoverageAnalysis]: Checked inductivity of 73153 backedges. 0 proven. 73153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:33:03,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:36:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 73153 backedges. 0 proven. 73153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:36:35,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953452500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:36:35,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [630350810] [2024-11-14 03:36:35,453 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2024-11-14 03:36:35,453 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:36:35,453 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:36:35,453 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:36:35,454 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:36:35,507 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:36:36,370 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10081#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~sum~0#1_798| Int)) (and (not (= 800020000 (mod |v_ULTIMATE.start_main_~sum~0#1_798| 18446744073709551616))) (<= 0 |v_ULTIMATE.start_main_~sum~0#1_798|))) (= ~SIZE~0 40000))' at error location [2024-11-14 03:36:36,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:36:36,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:36:36,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [384, 384, 384] total 1150 [2024-11-14 03:36:36,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135534574] [2024-11-14 03:36:36,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:36:36,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 1151 states [2024-11-14 03:36:36,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:36:36,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 1151 interpolants. [2024-11-14 03:36:36,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=589062, Invalid=741500, Unknown=0, NotChecked=0, Total=1330562 [2024-11-14 03:36:36,484 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand has 1151 states, 1151 states have (on average 1.002606429192007) internal successors, (1154), 1150 states have internal predecessors, (1154), 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) [2024-11-14 03:37:04,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:37:04,075 INFO L93 Difference]: Finished difference Result 774 states and 1157 transitions. [2024-11-14 03:37:04,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2024-11-14 03:37:04,077 INFO L78 Accepts]: Start accepts. Automaton has has 1151 states, 1151 states have (on average 1.002606429192007) internal successors, (1154), 1150 states have internal predecessors, (1154), 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 386 [2024-11-14 03:37:04,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:37:04,082 INFO L225 Difference]: With dead ends: 774 [2024-11-14 03:37:04,082 INFO L226 Difference]: Without dead ends: 771 [2024-11-14 03:37:04,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1540 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 1152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591344 ImplicationChecksByTransitivity, 358.0s TimeCoverageRelationStatistics Valid=589062, Invalid=741500, Unknown=0, NotChecked=0, Total=1330562 [2024-11-14 03:37:04,133 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:37:04,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 03:37:04,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2024-11-14 03:37:04,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 771. [2024-11-14 03:37:04,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 770 states have (on average 1.0012987012987014) internal successors, (771), 770 states have internal predecessors, (771), 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) [2024-11-14 03:37:04,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 771 transitions. [2024-11-14 03:37:04,175 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 771 transitions. Word has length 386 [2024-11-14 03:37:04,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:37:04,175 INFO L471 AbstractCegarLoop]: Abstraction has 771 states and 771 transitions. [2024-11-14 03:37:04,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 1151 states, 1151 states have (on average 1.002606429192007) internal successors, (1154), 1150 states have internal predecessors, (1154), 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) [2024-11-14 03:37:04,177 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 771 transitions. [2024-11-14 03:37:04,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2024-11-14 03:37:04,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:37:04,200 INFO L215 NwaCegarLoop]: trace histogram [766, 1, 1, 1, 1] [2024-11-14 03:37:04,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 03:37:04,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f930ac4f-1006-41c7-9a0a-d1ba73c76937/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-14 03:37:04,405 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:37:04,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:37:04,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1420254886, now seen corresponding path program 9 times [2024-11-14 03:37:04,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:37:04,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926051700] [2024-11-14 03:37:04,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:37:04,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:37:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat