./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label16.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_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/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_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/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_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/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 93a127dc0b7a4d224911518339abd36637a414ede1527bd802daa3550402937e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:54:32,200 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:54:32,309 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:54:32,315 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:54:32,316 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:54:32,344 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:54:32,345 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:54:32,346 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:54:32,346 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:54:32,346 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:54:32,347 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:54:32,347 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:54:32,347 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:54:32,347 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:54:32,348 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:54:32,348 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:54:32,348 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:54:32,348 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:54:32,348 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:54:32,349 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:54:32,349 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:54:32,349 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:54:32,350 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:54:32,350 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:54:32,350 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:54:32,350 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:54:32,350 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:54:32,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:54:32,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:54:32,351 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:54:32,351 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:54:32,351 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:54:32,351 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:54:32,351 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:54:32,351 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:54:32,351 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:54:32,351 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:54:32,351 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:54:32,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:54:32,352 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:54:32,352 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:54:32,352 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:54:32,353 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:54:32,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:54:32,353 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:54:32,353 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:54:32,353 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:54:32,353 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_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/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 -> 93a127dc0b7a4d224911518339abd36637a414ede1527bd802daa3550402937e [2024-11-14 04:54:32,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:54:32,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:54:32,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:54:32,695 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:54:32,695 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:54:32,697 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/eca-rers2012/Problem14_label16.c Unable to find full path for "g++" [2024-11-14 04:54:34,882 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:54:35,457 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:54:35,458 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/sv-benchmarks/c/eca-rers2012/Problem14_label16.c [2024-11-14 04:54:35,491 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/bin/utaipan-verify-sOmjnqqW8E/data/0fbcb8395/ad383dc524384ca0945147f639bb5591/FLAGbc646c734 [2024-11-14 04:54:35,511 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/bin/utaipan-verify-sOmjnqqW8E/data/0fbcb8395/ad383dc524384ca0945147f639bb5591 [2024-11-14 04:54:35,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:54:35,515 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:54:35,517 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:54:35,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:54:35,523 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:54:35,524 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:54:35" (1/1) ... [2024-11-14 04:54:35,525 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6382aab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:35, skipping insertion in model container [2024-11-14 04:54:35,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:54:35" (1/1) ... [2024-11-14 04:54:35,601 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:54:35,859 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_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/sv-benchmarks/c/eca-rers2012/Problem14_label16.c[4807,4820] [2024-11-14 04:54:36,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:54:36,177 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:54:36,220 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_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/sv-benchmarks/c/eca-rers2012/Problem14_label16.c[4807,4820] [2024-11-14 04:54:36,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:54:36,418 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:54:36,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:36 WrapperNode [2024-11-14 04:54:36,419 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:54:36,420 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:54:36,420 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:54:36,421 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:54:36,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:36" (1/1) ... [2024-11-14 04:54:36,451 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:36" (1/1) ... [2024-11-14 04:54:36,576 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 858 [2024-11-14 04:54:36,577 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:54:36,578 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:54:36,578 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:54:36,578 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:54:36,588 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:36" (1/1) ... [2024-11-14 04:54:36,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:36" (1/1) ... [2024-11-14 04:54:36,596 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:36" (1/1) ... [2024-11-14 04:54:36,597 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:36" (1/1) ... [2024-11-14 04:54:36,630 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:36" (1/1) ... [2024-11-14 04:54:36,642 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:36" (1/1) ... [2024-11-14 04:54:36,647 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:36" (1/1) ... [2024-11-14 04:54:36,653 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:36" (1/1) ... [2024-11-14 04:54:36,675 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:54:36,679 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:54:36,683 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:54:36,683 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:54:36,684 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:36" (1/1) ... [2024-11-14 04:54:36,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:54:36,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:54:36,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:54:36,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:54:36,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:54:36,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:54:36,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:54:36,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:54:36,870 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:54:36,873 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:54:39,030 INFO L? ?]: Removed 123 outVars from TransFormulas that were not future-live. [2024-11-14 04:54:39,030 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:54:44,825 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:54:44,826 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 04:54:44,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:54:44 BoogieIcfgContainer [2024-11-14 04:54:44,826 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:54:44,830 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:54:44,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:54:44,836 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:54:44,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:54:35" (1/3) ... [2024-11-14 04:54:44,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166ccbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:54:44, skipping insertion in model container [2024-11-14 04:54:44,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:54:36" (2/3) ... [2024-11-14 04:54:44,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166ccbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:54:44, skipping insertion in model container [2024-11-14 04:54:44,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:54:44" (3/3) ... [2024-11-14 04:54:44,839 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label16.c [2024-11-14 04:54:44,860 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:54:44,862 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem14_label16.c that has 1 procedures, 9 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 04:54:44,938 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:54:44,957 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;@4a6e407a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:54:44,958 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:54:44,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:54:44,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 04:54:44,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:54:44,971 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 04:54:44,972 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:54:44,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:54:44,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1057235748, now seen corresponding path program 1 times [2024-11-14 04:54:44,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:54:44,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707215574] [2024-11-14 04:54:44,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:54:44,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:54:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:54:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:54:45,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:54:45,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707215574] [2024-11-14 04:54:45,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707215574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:54:45,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:54:45,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:54:45,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865621540] [2024-11-14 04:54:45,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:54:45,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:54:45,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:54:45,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:54:45,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:54:45,363 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:54:45,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:54:45,679 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2024-11-14 04:54:45,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:54:45,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-14 04:54:45,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:54:45,690 INFO L225 Difference]: With dead ends: 23 [2024-11-14 04:54:45,691 INFO L226 Difference]: Without dead ends: 11 [2024-11-14 04:54:45,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:54:45,707 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:54:45,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:54:45,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-11-14 04:54:45,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2024-11-14 04:54:45,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:54:45,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2024-11-14 04:54:45,752 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2024-11-14 04:54:45,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:54:45,753 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2024-11-14 04:54:45,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:54:45,754 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2024-11-14 04:54:45,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 04:54:45,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:54:45,754 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-14 04:54:45,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:54:45,756 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:54:45,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:54:45,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1413554924, now seen corresponding path program 1 times [2024-11-14 04:54:45,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:54:45,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535609612] [2024-11-14 04:54:45,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:54:45,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:54:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:55:13,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:55:13,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535609612] [2024-11-14 04:55:13,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535609612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:55:13,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230649656] [2024-11-14 04:55:13,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:55:13,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:55:13,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:55:13,768 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:55:13,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:55:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:13,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 04:55:13,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:55:17,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:55:17,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:55:20,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:55:20,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230649656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:55:20,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [92752387] [2024-11-14 04:55:20,597 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-14 04:55:20,597 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:55:20,601 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:55:20,608 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:55:20,609 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:55:22,413 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 42 [2024-11-14 04:55:24,550 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 55524 conjunctions. This might take some time... [2024-11-14 04:55:31,066 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 540 conjunctions. [2024-11-14 04:55:31,080 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 42 [2024-11-14 04:55:33,250 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 55524 conjunctions. This might take some time... [2024-11-14 04:55:40,210 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 540 conjunctions. [2024-11-14 04:59:41,271 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 41 [2024-11-14 04:59:42,017 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 27276 conjunctions. This might take some time... [2024-11-14 04:59:43,293 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 270 conjunctions. [2024-11-14 04:59:43,297 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 41 [2024-11-14 04:59:43,927 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 27276 conjunctions. This might take some time... [2024-11-14 04:59:45,242 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 270 conjunctions. [2024-11-14 05:05:02,356 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 41 [2024-11-14 05:05:02,896 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 27276 conjunctions. This might take some time... [2024-11-14 05:05:03,996 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 270 conjunctions. [2024-11-14 05:05:04,000 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 41 [2024-11-14 05:05:04,539 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 27276 conjunctions. This might take some time... [2024-11-14 05:05:05,653 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 270 conjunctions. [2024-11-14 05:05:05,707 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 41 [2024-11-14 05:05:06,281 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 27276 conjunctions. This might take some time... [2024-11-14 05:05:07,408 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 270 conjunctions. [2024-11-14 05:05:07,432 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 41 [2024-11-14 05:05:08,015 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 27276 conjunctions. This might take some time... [2024-11-14 05:05:09,053 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 270 conjunctions. [2024-11-14 05:05:09,079 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:05:09,160 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '112#(and (= ~a21~0 8) (= ~a24~0 1) (= 5 ~a15~0) (or (= |ULTIMATE.start_calculate_output_~input#1| 6) (= |ULTIMATE.start_calculate_output_~input#1| 2) (= |ULTIMATE.start_calculate_output_~input#1| 1) (= |ULTIMATE.start_calculate_output_~input#1| 3) (= |ULTIMATE.start_calculate_output_~input#1| 4) (= |ULTIMATE.start_calculate_output_~input#1| 5)) (<= 81 ~a12~0))' at error location [2024-11-14 05:05:09,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:05:09,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:05:09,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-14 05:05:09,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247037039] [2024-11-14 05:05:09,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:05:09,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 05:05:09,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:05:09,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 05:05:09,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:05:09,163 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:05:09,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:05:09,417 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-11-14 05:05:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:05:09,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 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 9 [2024-11-14 05:05:09,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:05:09,418 INFO L225 Difference]: With dead ends: 25 [2024-11-14 05:05:09,418 INFO L226 Difference]: Without dead ends: 23 [2024-11-14 05:05:09,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:05:09,419 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:05:09,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 13 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:05:09,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-14 05:05:09,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-11-14 05:05:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:05:09,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2024-11-14 05:05:09,425 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 9 [2024-11-14 05:05:09,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:05:09,425 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2024-11-14 05:05:09,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:05:09,425 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2024-11-14 05:05:09,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:05:09,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:05:09,426 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1] [2024-11-14 05:05:09,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 05:05:09,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:05:09,628 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:05:09,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:05:09,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1908323772, now seen corresponding path program 2 times [2024-11-14 05:05:09,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:05:09,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532856317] [2024-11-14 05:05:09,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:05:09,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:05:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:05:38,118 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-14 05:05:38,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:05:38,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532856317] [2024-11-14 05:05:38,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532856317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:05:38,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:05:38,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:05:38,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333129036] [2024-11-14 05:05:38,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:05:38,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:05:38,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:05:38,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:05:38,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:05:38,120 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:05:38,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:05:38,175 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2024-11-14 05:05:38,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:05:38,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:05:38,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:05:38,179 INFO L225 Difference]: With dead ends: 22 [2024-11-14 05:05:38,179 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 05:05:38,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:05:38,180 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:05:38,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:05:38,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 05:05:38,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 05:05:38,184 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) [2024-11-14 05:05:38,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 05:05:38,184 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2024-11-14 05:05:38,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:05:38,184 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 05:05:38,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:05:38,185 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 05:05:38,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 05:05:38,188 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 05:05:38,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 05:05:38,192 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1] [2024-11-14 05:05:38,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 05:05:38,215 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 05:05:38,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 05:05:38 BoogieIcfgContainer [2024-11-14 05:05:38,239 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 05:05:38,240 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 05:05:38,240 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 05:05:38,240 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 05:05:38,241 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:54:44" (3/4) ... [2024-11-14 05:05:38,243 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 05:05:38,271 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 233 nodes and edges [2024-11-14 05:05:38,273 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-14 05:05:38,276 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-14 05:05:38,278 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 05:05:38,465 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 05:05:38,465 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 05:05:38,465 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 05:05:38,467 INFO L158 Benchmark]: Toolchain (without parser) took 662950.96ms. Allocated memory was 117.4MB in the beginning and 6.2GB in the end (delta: 6.1GB). Free memory was 91.2MB in the beginning and 3.4GB in the end (delta: -3.3GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2024-11-14 05:05:38,467 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 167.8MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:05:38,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 902.12ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 59.6MB in the end (delta: 31.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 05:05:38,468 INFO L158 Benchmark]: Boogie Procedure Inliner took 156.84ms. Allocated memory is still 117.4MB. Free memory was 59.6MB in the beginning and 50.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:05:38,469 INFO L158 Benchmark]: Boogie Preprocessor took 100.64ms. Allocated memory is still 117.4MB. Free memory was 50.2MB in the beginning and 44.5MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:05:38,470 INFO L158 Benchmark]: RCFGBuilder took 8147.51ms. Allocated memory was 117.4MB in the beginning and 595.6MB in the end (delta: 478.2MB). Free memory was 44.5MB in the beginning and 220.7MB in the end (delta: -176.2MB). Peak memory consumption was 349.2MB. Max. memory is 16.1GB. [2024-11-14 05:05:38,471 INFO L158 Benchmark]: TraceAbstraction took 653409.15ms. Allocated memory was 595.6MB in the beginning and 6.2GB in the end (delta: 5.6GB). Free memory was 220.7MB in the beginning and 3.5GB in the end (delta: -3.2GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2024-11-14 05:05:38,471 INFO L158 Benchmark]: Witness Printer took 225.60ms. Allocated memory is still 6.2GB. Free memory was 3.5GB in the beginning and 3.4GB in the end (delta: 16.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:05:38,473 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 167.8MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 902.12ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 59.6MB in the end (delta: 31.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 156.84ms. Allocated memory is still 117.4MB. Free memory was 59.6MB in the beginning and 50.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 100.64ms. Allocated memory is still 117.4MB. Free memory was 50.2MB in the beginning and 44.5MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 8147.51ms. Allocated memory was 117.4MB in the beginning and 595.6MB in the end (delta: 478.2MB). Free memory was 44.5MB in the beginning and 220.7MB in the end (delta: -176.2MB). Peak memory consumption was 349.2MB. Max. memory is 16.1GB. * TraceAbstraction took 653409.15ms. Allocated memory was 595.6MB in the beginning and 6.2GB in the end (delta: 5.6GB). Free memory was 220.7MB in the beginning and 3.5GB in the end (delta: -3.2GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. * Witness Printer took 225.60ms. Allocated memory is still 6.2GB. Free memory was 3.5GB in the beginning and 3.4GB in the end (delta: 16.7MB). 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: 152]: 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, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 653.3s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 8 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 62.7s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 450 SizeOfPredicates, 4 NumberOfNonLiveVariables, 163 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 36/45 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: 890]: Loop Invariant Derived loop invariant: ((((a24 != 1) || (a12 < 81)) || (a21 != 8)) || (5 != a15)) RESULT: Ultimate proved your program to be correct! [2024-11-14 05:05:38,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80a7d9fc-4f78-49f7-b0e4-6e47f269c8eb/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE