./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-programs/Problem101_label23.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_e4c9304a-7c2c-4b96-bbf1-efb73028ebe3/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c9304a-7c2c-4b96-bbf1-efb73028ebe3/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_e4c9304a-7c2c-4b96-bbf1-efb73028ebe3/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c9304a-7c2c-4b96-bbf1-efb73028ebe3/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-programs/Problem101_label23.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c9304a-7c2c-4b96-bbf1-efb73028ebe3/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_e4c9304a-7c2c-4b96-bbf1-efb73028ebe3/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 c7046cfa4b2ec4fa3792b24e46845153f6a07e82a781b78430ee0a56239bbfb5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:45:47,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:45:47,283 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c9304a-7c2c-4b96-bbf1-efb73028ebe3/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:45:47,290 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:45:47,290 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:45:47,335 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:45:47,337 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:45:47,337 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:45:47,338 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:45:47,339 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:45:47,340 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:45:47,340 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:45:47,340 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:45:47,340 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:45:47,340 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:45:47,340 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:45:47,340 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:45:47,341 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:45:47,341 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:45:47,341 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:45:47,341 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:45:47,341 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:45:47,342 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:45:47,342 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:45:47,342 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:45:47,342 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:45:47,342 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:45:47,342 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:45:47,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:45:47,342 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:45:47,342 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:45:47,342 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:45:47,343 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:45:47,343 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:45:47,343 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:45:47,343 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:45:47,344 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:45:47,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:45:47,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:45:47,345 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:45:47,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:45:47,345 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:45:47,345 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:45:47,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:45:47,346 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:45:47,346 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:45:47,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:45:47,347 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_e4c9304a-7c2c-4b96-bbf1-efb73028ebe3/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 -> c7046cfa4b2ec4fa3792b24e46845153f6a07e82a781b78430ee0a56239bbfb5 [2024-11-14 03:45:47,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:45:47,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:45:47,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:45:47,748 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:45:47,750 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:45:47,752 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c9304a-7c2c-4b96-bbf1-efb73028ebe3/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/eca-programs/Problem101_label23.c Unable to find full path for "g++" [2024-11-14 03:45:50,095 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:45:52,566 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:45:52,567 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c9304a-7c2c-4b96-bbf1-efb73028ebe3/sv-benchmarks/c/eca-programs/Problem101_label23.c [2024-11-14 03:45:52,746 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c9304a-7c2c-4b96-bbf1-efb73028ebe3/bin/utaipan-verify-sOmjnqqW8E/data/ff0032677/e8f715dad1c14d7da6769d9079b968e0/FLAG3c99fe519 [2024-11-14 03:45:52,765 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c9304a-7c2c-4b96-bbf1-efb73028ebe3/bin/utaipan-verify-sOmjnqqW8E/data/ff0032677/e8f715dad1c14d7da6769d9079b968e0 [2024-11-14 03:45:52,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:45:52,770 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:45:52,772 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:45:52,772 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:45:52,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:45:52,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:45:52" (1/1) ... [2024-11-14 03:45:52,780 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 03:45:52, skipping insertion in model container [2024-11-14 03:45:52,781 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:45:52" (1/1) ... [2024-11-14 03:45:53,777 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:46:06,521 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_e4c9304a-7c2c-4b96-bbf1-efb73028ebe3/sv-benchmarks/c/eca-programs/Problem101_label23.c[2766456,2766469] [2024-11-14 03:46:06,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:46:06,614 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:46:14,614 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_e4c9304a-7c2c-4b96-bbf1-efb73028ebe3/sv-benchmarks/c/eca-programs/Problem101_label23.c[2766456,2766469] [2024-11-14 03:46:14,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:46:15,869 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:46:15,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:46:15 WrapperNode [2024-11-14 03:46:15,870 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:46:15,871 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:46:15,871 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:46:15,872 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:46:15,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:46:15" (1/1) ... [2024-11-14 03:46:16,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:46:15" (1/1) ... [2024-11-14 03:46:20,720 INFO L138 Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83825 [2024-11-14 03:46:20,721 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:46:20,722 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:46:20,722 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:46:20,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:46:20,730 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:46:15" (1/1) ... [2024-11-14 03:46:20,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:46:15" (1/1) ... [2024-11-14 03:46:21,120 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:46:15" (1/1) ... [2024-11-14 03:46:21,121 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:46:15" (1/1) ... [2024-11-14 03:46:22,683 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:46:15" (1/1) ... [2024-11-14 03:46:22,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:46:15" (1/1) ... [2024-11-14 03:46:23,443 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:46:15" (1/1) ... [2024-11-14 03:46:23,569 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:46:15" (1/1) ... [2024-11-14 03:46:23,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:46:23,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:46:23,993 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:46:23,993 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:46:23,994 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:46:15" (1/1) ... [2024-11-14 03:46:24,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:46:24,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c9304a-7c2c-4b96-bbf1-efb73028ebe3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:46:24,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c9304a-7c2c-4b96-bbf1-efb73028ebe3/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:46:24,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c9304a-7c2c-4b96-bbf1-efb73028ebe3/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:46:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:46:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:46:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:46:24,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:46:24,312 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:46:24,315 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:47:27,458 INFO L? ?]: Removed 10238 outVars from TransFormulas that were not future-live. [2024-11-14 03:47:27,458 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:47:29,016 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:47:29,016 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 03:47:29,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:47:29 BoogieIcfgContainer [2024-11-14 03:47:29,017 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:47:29,020 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:47:29,020 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:47:29,026 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:47:29,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:45:52" (1/3) ... [2024-11-14 03:47:29,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eaeeef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:47:29, skipping insertion in model container [2024-11-14 03:47:29,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:46:15" (2/3) ... [2024-11-14 03:47:29,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eaeeef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:47:29, skipping insertion in model container [2024-11-14 03:47:29,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:47:29" (3/3) ... [2024-11-14 03:47:29,034 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem101_label23.c [2024-11-14 03:47:29,059 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:47:29,061 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem101_label23.c that has 1 procedures, 10135 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 03:47:29,408 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:47:29,429 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;@1b4f847d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:47:29,430 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:47:29,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 10135 states, 10133 states have (on average 1.9951643146156124) internal successors, (20217), 10134 states have internal predecessors, (20217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:47:30,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10086 [2024-11-14 03:47:30,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:47:30,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:47:30,420 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:47:30,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:47:30,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1629681425, now seen corresponding path program 1 times [2024-11-14 03:47:30,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:47:30,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479411823] [2024-11-14 03:47:30,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:47:30,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:47:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat