./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label30.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_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/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_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label30.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/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_1cb33fe0-d192-4969-8939-901c10d5bf8f/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 1f76deb0aac2d13590c7cb3a6148c4325e466ac4c549b73efe913c295ef834bc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:38:59,511 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:38:59,606 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-13 23:38:59,616 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:38:59,617 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:38:59,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:38:59,655 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:38:59,655 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:38:59,656 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:38:59,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:38:59,656 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:38:59,658 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:38:59,658 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:38:59,658 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:38:59,658 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:38:59,658 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:38:59,658 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:38:59,659 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:38:59,659 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:38:59,659 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:38:59,660 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:38:59,660 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:38:59,660 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:38:59,660 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:38:59,661 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:38:59,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:38:59,661 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:38:59,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:38:59,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:38:59,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:38:59,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:38:59,662 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:38:59,662 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:38:59,662 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:38:59,662 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:38:59,662 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:38:59,663 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:38:59,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:38:59,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:38:59,664 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:38:59,664 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:38:59,664 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:38:59,664 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:38:59,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:38:59,665 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:38:59,665 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:38:59,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:38:59,665 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_1cb33fe0-d192-4969-8939-901c10d5bf8f/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 -> 1f76deb0aac2d13590c7cb3a6148c4325e466ac4c549b73efe913c295ef834bc [2024-11-13 23:38:59,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:39:00,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:39:00,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:39:00,010 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:39:00,010 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:39:00,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/eca-rers2012/Problem02_label30.c Unable to find full path for "g++" [2024-11-13 23:39:02,491 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:39:02,952 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:39:02,953 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/sv-benchmarks/c/eca-rers2012/Problem02_label30.c [2024-11-13 23:39:02,970 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/data/fff5fa1b9/1e94abec549d4f09936978ce6311a0a6/FLAGcb4d594b6 [2024-11-13 23:39:02,997 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/data/fff5fa1b9/1e94abec549d4f09936978ce6311a0a6 [2024-11-13 23:39:03,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:39:03,005 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:39:03,011 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:39:03,011 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:39:03,017 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:39:03,020 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:39:02" (1/1) ... [2024-11-13 23:39:03,024 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4639144f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:03, skipping insertion in model container [2024-11-13 23:39:03,024 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:39:02" (1/1) ... [2024-11-13 23:39:03,089 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:39:03,640 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_1cb33fe0-d192-4969-8939-901c10d5bf8f/sv-benchmarks/c/eca-rers2012/Problem02_label30.c[19968,19981] [2024-11-13 23:39:03,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:39:03,698 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:39:03,895 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_1cb33fe0-d192-4969-8939-901c10d5bf8f/sv-benchmarks/c/eca-rers2012/Problem02_label30.c[19968,19981] [2024-11-13 23:39:03,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:39:03,955 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:39:03,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:03 WrapperNode [2024-11-13 23:39:03,956 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:39:03,957 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:39:03,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:39:03,959 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:39:03,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:03" (1/1) ... [2024-11-13 23:39:04,000 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:03" (1/1) ... [2024-11-13 23:39:04,095 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2024-11-13 23:39:04,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:39:04,097 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:39:04,100 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:39:04,100 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:39:04,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:03" (1/1) ... [2024-11-13 23:39:04,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:03" (1/1) ... [2024-11-13 23:39:04,130 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:03" (1/1) ... [2024-11-13 23:39:04,130 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:03" (1/1) ... [2024-11-13 23:39:04,169 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:03" (1/1) ... [2024-11-13 23:39:04,180 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:03" (1/1) ... [2024-11-13 23:39:04,184 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:03" (1/1) ... [2024-11-13 23:39:04,188 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:03" (1/1) ... [2024-11-13 23:39:04,200 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:39:04,201 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:39:04,201 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:39:04,201 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:39:04,203 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:03" (1/1) ... [2024-11-13 23:39:04,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:39:04,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:39:04,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:39:04,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:39:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:39:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:39:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:39:04,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:39:04,439 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:39:04,441 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:39:06,202 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2024-11-13 23:39:06,203 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:39:06,735 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:39:06,735 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 23:39:06,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:39:06 BoogieIcfgContainer [2024-11-13 23:39:06,736 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:39:06,740 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:39:06,740 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:39:06,746 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:39:06,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:39:02" (1/3) ... [2024-11-13 23:39:06,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3784628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:39:06, skipping insertion in model container [2024-11-13 23:39:06,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:03" (2/3) ... [2024-11-13 23:39:06,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3784628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:39:06, skipping insertion in model container [2024-11-13 23:39:06,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:39:06" (3/3) ... [2024-11-13 23:39:06,751 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label30.c [2024-11-13 23:39:06,777 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:39:06,780 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem02_label30.c that has 1 procedures, 85 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 23:39:06,882 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:39:06,900 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;@60f47ff5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:39:06,900 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 23:39:06,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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) [2024-11-13 23:39:06,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 23:39:06,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:39:06,923 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:39:06,924 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:39:06,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:39:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash 545135094, now seen corresponding path program 1 times [2024-11-13 23:39:06,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:39:06,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547625893] [2024-11-13 23:39:06,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:39:06,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:39:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:39:07,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:39:07,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:39:07,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547625893] [2024-11-13 23:39:07,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547625893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:39:07,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:39:07,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:39:07,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983594620] [2024-11-13 23:39:07,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:39:07,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:39:07,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:39:07,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:39:07,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:39:07,852 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2024-11-13 23:39:08,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:39:08,743 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2024-11-13 23:39:08,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:39:08,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 80 [2024-11-13 23:39:08,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:39:08,764 INFO L225 Difference]: With dead ends: 251 [2024-11-13 23:39:08,764 INFO L226 Difference]: Without dead ends: 163 [2024-11-13 23:39:08,768 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 [2024-11-13 23:39:08,772 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 58 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 23:39:08,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 11 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 23:39:08,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-13 23:39:08,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2024-11-13 23:39:08,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.9320987654320987) internal successors, (313), 162 states have internal predecessors, (313), 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) [2024-11-13 23:39:08,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2024-11-13 23:39:08,857 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2024-11-13 23:39:08,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:39:08,858 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2024-11-13 23:39:08,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2024-11-13 23:39:08,861 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2024-11-13 23:39:08,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-13 23:39:08,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:39:08,868 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:39:08,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 23:39:08,868 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:39:08,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:39:08,869 INFO L85 PathProgramCache]: Analyzing trace with hash -726167991, now seen corresponding path program 1 times [2024-11-13 23:39:08,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:39:08,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626055255] [2024-11-13 23:39:08,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:39:08,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:39:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:39:09,289 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:39:09,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:39:09,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626055255] [2024-11-13 23:39:09,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626055255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:39:09,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:39:09,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:39:09,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57707692] [2024-11-13 23:39:09,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:39:09,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:39:09,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:39:09,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:39:09,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:39:09,297 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:39:09,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:39:09,727 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2024-11-13 23:39:09,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:39:09,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-11-13 23:39:09,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:39:09,730 INFO L225 Difference]: With dead ends: 325 [2024-11-13 23:39:09,730 INFO L226 Difference]: Without dead ends: 163 [2024-11-13 23:39:09,731 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 [2024-11-13 23:39:09,736 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 125 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:39:09,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 4 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:39:09,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-13 23:39:09,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2024-11-13 23:39:09,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.7469135802469136) internal successors, (283), 162 states have internal predecessors, (283), 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) [2024-11-13 23:39:09,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2024-11-13 23:39:09,768 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2024-11-13 23:39:09,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:39:09,773 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2024-11-13 23:39:09,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:39:09,774 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2024-11-13 23:39:09,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-13 23:39:09,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:39:09,777 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:39:09,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 23:39:09,778 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:39:09,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:39:09,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1724840203, now seen corresponding path program 1 times [2024-11-13 23:39:09,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:39:09,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274568466] [2024-11-13 23:39:09,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:39:09,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:39:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:39:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:39:10,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:39:10,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274568466] [2024-11-13 23:39:10,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274568466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:39:10,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:39:10,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:39:10,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753853032] [2024-11-13 23:39:10,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:39:10,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:39:10,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:39:10,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:39:10,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:39:10,213 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2024-11-13 23:39:10,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:39:10,828 INFO L93 Difference]: Finished difference Result 487 states and 847 transitions. [2024-11-13 23:39:10,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:39:10,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 [2024-11-13 23:39:10,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:39:10,832 INFO L225 Difference]: With dead ends: 487 [2024-11-13 23:39:10,832 INFO L226 Difference]: Without dead ends: 325 [2024-11-13 23:39:10,833 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 [2024-11-13 23:39:10,835 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 23:39:10,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 22 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 23:39:10,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-11-13 23:39:10,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2024-11-13 23:39:10,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.6583850931677018) internal successors, (534), 322 states have internal predecessors, (534), 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) [2024-11-13 23:39:10,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 534 transitions. [2024-11-13 23:39:10,866 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 534 transitions. Word has length 98 [2024-11-13 23:39:10,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:39:10,867 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 534 transitions. [2024-11-13 23:39:10,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2024-11-13 23:39:10,867 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 534 transitions. [2024-11-13 23:39:10,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-13 23:39:10,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:39:10,870 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:39:10,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 23:39:10,871 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:39:10,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:39:10,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1375677761, now seen corresponding path program 1 times [2024-11-13 23:39:10,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:39:10,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56372139] [2024-11-13 23:39:10,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:39:10,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:39:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:39:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:39:11,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:39:11,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56372139] [2024-11-13 23:39:11,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56372139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:39:11,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:39:11,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:39:11,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088991990] [2024-11-13 23:39:11,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:39:11,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:39:11,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:39:11,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:39:11,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:39:11,031 INFO L87 Difference]: Start difference. First operand 323 states and 534 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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) [2024-11-13 23:39:11,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:39:11,635 INFO L93 Difference]: Finished difference Result 965 states and 1599 transitions. [2024-11-13 23:39:11,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:39:11,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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 102 [2024-11-13 23:39:11,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:39:11,643 INFO L225 Difference]: With dead ends: 965 [2024-11-13 23:39:11,643 INFO L226 Difference]: Without dead ends: 643 [2024-11-13 23:39:11,645 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 [2024-11-13 23:39:11,646 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 88 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 23:39:11,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 30 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 23:39:11,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2024-11-13 23:39:11,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 483. [2024-11-13 23:39:11,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.5643153526970954) internal successors, (754), 482 states have internal predecessors, (754), 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) [2024-11-13 23:39:11,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 754 transitions. [2024-11-13 23:39:11,711 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 754 transitions. Word has length 102 [2024-11-13 23:39:11,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:39:11,711 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 754 transitions. [2024-11-13 23:39:11,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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) [2024-11-13 23:39:11,712 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 754 transitions. [2024-11-13 23:39:11,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-13 23:39:11,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:39:11,715 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:39:11,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 23:39:11,716 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:39:11,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:39:11,717 INFO L85 PathProgramCache]: Analyzing trace with hash 19634356, now seen corresponding path program 1 times [2024-11-13 23:39:11,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:39:11,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297737389] [2024-11-13 23:39:11,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:39:11,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:39:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:39:11,990 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 23:39:11,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:39:11,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297737389] [2024-11-13 23:39:11,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297737389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:39:11,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:39:11,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:39:11,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605219895] [2024-11-13 23:39:11,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:39:11,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:39:11,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:39:11,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:39:11,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:39:11,996 INFO L87 Difference]: Start difference. First operand 483 states and 754 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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) [2024-11-13 23:39:12,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:39:12,581 INFO L93 Difference]: Finished difference Result 1285 states and 1992 transitions. [2024-11-13 23:39:12,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:39:12,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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 106 [2024-11-13 23:39:12,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:39:12,586 INFO L225 Difference]: With dead ends: 1285 [2024-11-13 23:39:12,586 INFO L226 Difference]: Without dead ends: 803 [2024-11-13 23:39:12,587 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 [2024-11-13 23:39:12,589 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 75 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:39:12,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 58 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 23:39:12,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2024-11-13 23:39:12,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2024-11-13 23:39:12,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.3765586034912718) internal successors, (1104), 802 states have internal predecessors, (1104), 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) [2024-11-13 23:39:12,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1104 transitions. [2024-11-13 23:39:12,628 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1104 transitions. Word has length 106 [2024-11-13 23:39:12,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:39:12,629 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1104 transitions. [2024-11-13 23:39:12,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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) [2024-11-13 23:39:12,629 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1104 transitions. [2024-11-13 23:39:12,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-13 23:39:12,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:39:12,632 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:39:12,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 23:39:12,633 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:39:12,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:39:12,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1555712771, now seen corresponding path program 1 times [2024-11-13 23:39:12,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:39:12,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145731029] [2024-11-13 23:39:12,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:39:12,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:39:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:39:13,410 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:39:13,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:39:13,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145731029] [2024-11-13 23:39:13,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145731029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:39:13,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114443872] [2024-11-13 23:39:13,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:39:13,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:39:13,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:39:13,420 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:39:13,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 23:39:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:39:13,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 23:39:13,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:39:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 23:39:13,859 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:39:13,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114443872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:39:13,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:39:13,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-13 23:39:13,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961285649] [2024-11-13 23:39:13,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:39:13,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:39:13,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:39:13,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:39:13,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:39:13,864 INFO L87 Difference]: Start difference. First operand 803 states and 1104 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-11-13 23:39:14,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:39:14,428 INFO L93 Difference]: Finished difference Result 1845 states and 2567 transitions. [2024-11-13 23:39:14,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:39:14,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 107 [2024-11-13 23:39:14,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:39:14,435 INFO L225 Difference]: With dead ends: 1845 [2024-11-13 23:39:14,435 INFO L226 Difference]: Without dead ends: 1043 [2024-11-13 23:39:14,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:39:14,437 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:39:14,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 119 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 23:39:14,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2024-11-13 23:39:14,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 963. [2024-11-13 23:39:14,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.3024948024948024) internal successors, (1253), 962 states have internal predecessors, (1253), 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) [2024-11-13 23:39:14,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1253 transitions. [2024-11-13 23:39:14,480 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1253 transitions. Word has length 107 [2024-11-13 23:39:14,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:39:14,481 INFO L471 AbstractCegarLoop]: Abstraction has 963 states and 1253 transitions. [2024-11-13 23:39:14,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-11-13 23:39:14,482 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1253 transitions. [2024-11-13 23:39:14,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-13 23:39:14,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:39:14,486 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:39:14,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 23:39:14,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 23:39:14,687 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:39:14,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:39:14,688 INFO L85 PathProgramCache]: Analyzing trace with hash 34297972, now seen corresponding path program 1 times [2024-11-13 23:39:14,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:39:14,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010698238] [2024-11-13 23:39:14,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:39:14,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:39:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:39:14,927 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-13 23:39:14,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:39:14,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010698238] [2024-11-13 23:39:14,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010698238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:39:14,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:39:14,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:39:14,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296721680] [2024-11-13 23:39:14,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:39:14,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:39:14,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:39:14,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:39:14,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:39:14,931 INFO L87 Difference]: Start difference. First operand 963 states and 1253 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-13 23:39:15,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:39:15,452 INFO L93 Difference]: Finished difference Result 2005 states and 2600 transitions. [2024-11-13 23:39:15,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:39:15,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 150 [2024-11-13 23:39:15,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:39:15,458 INFO L225 Difference]: With dead ends: 2005 [2024-11-13 23:39:15,458 INFO L226 Difference]: Without dead ends: 883 [2024-11-13 23:39:15,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:39:15,461 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 76 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:39:15,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 16 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 23:39:15,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2024-11-13 23:39:15,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2024-11-13 23:39:15,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.1780045351473922) internal successors, (1039), 882 states have internal predecessors, (1039), 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) [2024-11-13 23:39:15,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1039 transitions. [2024-11-13 23:39:15,499 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1039 transitions. Word has length 150 [2024-11-13 23:39:15,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:39:15,500 INFO L471 AbstractCegarLoop]: Abstraction has 883 states and 1039 transitions. [2024-11-13 23:39:15,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-13 23:39:15,500 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1039 transitions. [2024-11-13 23:39:15,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-13 23:39:15,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:39:15,506 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:39:15,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 23:39:15,507 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:39:15,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:39:15,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2051197910, now seen corresponding path program 1 times [2024-11-13 23:39:15,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:39:15,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067361534] [2024-11-13 23:39:15,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:39:15,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:39:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:39:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-13 23:39:16,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:39:16,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067361534] [2024-11-13 23:39:16,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067361534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:39:16,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945656559] [2024-11-13 23:39:16,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:39:16,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:39:16,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:39:16,173 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:39:16,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 23:39:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:39:16,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 23:39:16,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:39:16,675 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-13 23:39:16,675 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:39:16,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945656559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:39:16,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:39:16,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-13 23:39:16,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208838096] [2024-11-13 23:39:16,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:39:16,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:39:16,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:39:16,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:39:16,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:39:16,679 INFO L87 Difference]: Start difference. First operand 883 states and 1039 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-11-13 23:39:17,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:39:17,226 INFO L93 Difference]: Finished difference Result 1923 states and 2287 transitions. [2024-11-13 23:39:17,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:39:17,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 154 [2024-11-13 23:39:17,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:39:17,228 INFO L225 Difference]: With dead ends: 1923 [2024-11-13 23:39:17,228 INFO L226 Difference]: Without dead ends: 0 [2024-11-13 23:39:17,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:39:17,231 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:39:17,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 101 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 23:39:17,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-13 23:39:17,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-13 23:39:17,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-11-13 23:39:17,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-13 23:39:17,235 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2024-11-13 23:39:17,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:39:17,235 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 23:39:17,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-11-13 23:39:17,237 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-13 23:39:17,240 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-13 23:39:17,243 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 23:39:17,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 23:39:17,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 23:39:17,450 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:39:17,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-13 23:39:17,716 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 23:39:17,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 11:39:17 BoogieIcfgContainer [2024-11-13 23:39:17,748 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 23:39:17,749 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 23:39:17,750 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 23:39:17,750 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 23:39:17,751 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:39:06" (3/4) ... [2024-11-13 23:39:17,755 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 23:39:17,788 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 129 nodes and edges [2024-11-13 23:39:17,790 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-13 23:39:17,794 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-13 23:39:17,796 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 23:39:18,041 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-13 23:39:18,042 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-13 23:39:18,042 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 23:39:18,044 INFO L158 Benchmark]: Toolchain (without parser) took 15038.09ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 116.8MB in the beginning and 114.8MB in the end (delta: 2.0MB). Peak memory consumption was 73.9MB. Max. memory is 16.1GB. [2024-11-13 23:39:18,045 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 167.8MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:39:18,046 INFO L158 Benchmark]: CACSL2BoogieTranslator took 945.67ms. Allocated memory is still 142.6MB. Free memory was 116.8MB in the beginning and 91.3MB in the end (delta: 25.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 23:39:18,047 INFO L158 Benchmark]: Boogie Procedure Inliner took 139.19ms. Allocated memory is still 142.6MB. Free memory was 91.3MB in the beginning and 85.7MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 23:39:18,048 INFO L158 Benchmark]: Boogie Preprocessor took 103.28ms. Allocated memory is still 142.6MB. Free memory was 85.7MB in the beginning and 82.0MB in the end (delta: 3.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:39:18,049 INFO L158 Benchmark]: RCFGBuilder took 2535.63ms. Allocated memory is still 142.6MB. Free memory was 82.0MB in the beginning and 78.1MB in the end (delta: 3.9MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. [2024-11-13 23:39:18,050 INFO L158 Benchmark]: TraceAbstraction took 11008.84ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 77.6MB in the beginning and 125.9MB in the end (delta: -48.4MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2024-11-13 23:39:18,051 INFO L158 Benchmark]: Witness Printer took 292.83ms. Allocated memory is still 218.1MB. Free memory was 125.9MB in the beginning and 114.8MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 23:39:18,053 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 167.8MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 945.67ms. Allocated memory is still 142.6MB. Free memory was 116.8MB in the beginning and 91.3MB in the end (delta: 25.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 139.19ms. Allocated memory is still 142.6MB. Free memory was 91.3MB in the beginning and 85.7MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 103.28ms. Allocated memory is still 142.6MB. Free memory was 85.7MB in the beginning and 82.0MB in the end (delta: 3.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2535.63ms. Allocated memory is still 142.6MB. Free memory was 82.0MB in the beginning and 78.1MB in the end (delta: 3.9MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. * TraceAbstraction took 11008.84ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 77.6MB in the beginning and 125.9MB in the end (delta: -48.4MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. * Witness Printer took 292.83ms. Allocated memory is still 218.1MB. Free memory was 125.9MB in the beginning and 114.8MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 566]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.6s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 519 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 519 mSDsluCounter, 361 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 426 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1709 IncrementalHoareTripleChecker+Invalid, 2135 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 426 mSolverCounterUnsat, 335 mSDtfsCounter, 1709 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 280 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=963occurred in iteration=6, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 242 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 1149 NumberOfCodeBlocks, 1149 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1139 ConstructedInterpolants, 0 QuantifiedInterpolants, 3869 SizeOfPredicates, 0 NumberOfNonLiveVariables, 643 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 561/585 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((a17 == 8) && (a28 <= 10)) || ((a28 == 10) && (a17 <= 8))) || ((a17 <= 8) && (a19 == 1))) || ((((a25 == a11) && (9 <= a28)) && (a17 <= 8)) && (a28 <= 10))) RESULT: Ultimate proved your program to be correct! [2024-11-13 23:39:18,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb33fe0-d192-4969-8939-901c10d5bf8f/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE