./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-33.i --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_08271798-7f6b-41ff-9723-e578cd9f99fc/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08271798-7f6b-41ff-9723-e578cd9f99fc/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_08271798-7f6b-41ff-9723-e578cd9f99fc/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08271798-7f6b-41ff-9723-e578cd9f99fc/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-33.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08271798-7f6b-41ff-9723-e578cd9f99fc/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_08271798-7f6b-41ff-9723-e578cd9f99fc/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 10c24f006156daba0f87adc85da926a7bfe9ad7c7769d678846bdde773fb38c1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:33:14,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:33:14,721 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08271798-7f6b-41ff-9723-e578cd9f99fc/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-13 23:33:14,731 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:33:14,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:33:14,777 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:33:14,778 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:33:14,778 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:33:14,779 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:33:14,779 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:33:14,780 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:33:14,780 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:33:14,780 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:33:14,781 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:33:14,781 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:33:14,781 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:33:14,783 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:33:14,783 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:33:14,783 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:33:14,783 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:33:14,784 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:33:14,784 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:33:14,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:33:14,784 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:33:14,784 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:33:14,784 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:33:14,785 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:33:14,785 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:33:14,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:33:14,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:33:14,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:33:14,785 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:33:14,785 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:33:14,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:33:14,785 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:33:14,785 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:33:14,785 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:33:14,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:33:14,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:33:14,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:33:14,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:33:14,788 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:33:14,788 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:33:14,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:33:14,788 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:33:14,788 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:33:14,788 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:33:14,788 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_08271798-7f6b-41ff-9723-e578cd9f99fc/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 -> 10c24f006156daba0f87adc85da926a7bfe9ad7c7769d678846bdde773fb38c1 [2024-11-13 23:33:15,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:33:15,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:33:15,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:33:15,196 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:33:15,196 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:33:15,200 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08271798-7f6b-41ff-9723-e578cd9f99fc/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-33.i Unable to find full path for "g++" [2024-11-13 23:33:17,643 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:33:17,965 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:33:17,972 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08271798-7f6b-41ff-9723-e578cd9f99fc/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-33.i [2024-11-13 23:33:17,987 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08271798-7f6b-41ff-9723-e578cd9f99fc/bin/utaipan-verify-sOmjnqqW8E/data/5fa01397d/7e8253ba56234874ad445fa070602eb9/FLAG781951c01 [2024-11-13 23:33:18,012 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08271798-7f6b-41ff-9723-e578cd9f99fc/bin/utaipan-verify-sOmjnqqW8E/data/5fa01397d/7e8253ba56234874ad445fa070602eb9 [2024-11-13 23:33:18,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:33:18,017 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:33:18,019 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:33:18,019 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:33:18,025 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:33:18,026 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:33:18" (1/1) ... [2024-11-13 23:33:18,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b724104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:18, skipping insertion in model container [2024-11-13 23:33:18,027 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:33:18" (1/1) ... [2024-11-13 23:33:18,053 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:33:18,273 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_08271798-7f6b-41ff-9723-e578cd9f99fc/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-33.i[919,932] [2024-11-13 23:33:18,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:33:18,402 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:33:18,418 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_08271798-7f6b-41ff-9723-e578cd9f99fc/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-33.i[919,932] [2024-11-13 23:33:18,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:33:18,518 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:33:18,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:18 WrapperNode [2024-11-13 23:33:18,519 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:33:18,520 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:33:18,521 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:33:18,521 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:33:18,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:18" (1/1) ... [2024-11-13 23:33:18,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:18" (1/1) ... [2024-11-13 23:33:18,638 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 251 [2024-11-13 23:33:18,639 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:33:18,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:33:18,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:33:18,642 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:33:18,649 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:18" (1/1) ... [2024-11-13 23:33:18,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:18" (1/1) ... [2024-11-13 23:33:18,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:18" (1/1) ... [2024-11-13 23:33:18,655 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:18" (1/1) ... [2024-11-13 23:33:18,669 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:18" (1/1) ... [2024-11-13 23:33:18,674 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:18" (1/1) ... [2024-11-13 23:33:18,682 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:18" (1/1) ... [2024-11-13 23:33:18,688 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:18" (1/1) ... [2024-11-13 23:33:18,704 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:33:18,706 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:33:18,707 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:33:18,707 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:33:18,708 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:18" (1/1) ... [2024-11-13 23:33:18,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:33:18,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08271798-7f6b-41ff-9723-e578cd9f99fc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:33:18,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08271798-7f6b-41ff-9723-e578cd9f99fc/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:33:18,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08271798-7f6b-41ff-9723-e578cd9f99fc/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:33:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:33:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 23:33:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 23:33:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:33:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:33:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:33:18,960 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:33:18,963 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:33:19,689 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-13 23:33:19,689 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:33:20,133 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:33:20,134 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 23:33:20,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:33:20 BoogieIcfgContainer [2024-11-13 23:33:20,134 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:33:20,139 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:33:20,139 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:33:20,146 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:33:20,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:33:18" (1/3) ... [2024-11-13 23:33:20,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7def2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:33:20, skipping insertion in model container [2024-11-13 23:33:20,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:18" (2/3) ... [2024-11-13 23:33:20,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7def2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:33:20, skipping insertion in model container [2024-11-13 23:33:20,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:33:20" (3/3) ... [2024-11-13 23:33:20,151 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-33.i [2024-11-13 23:33:20,172 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:33:20,175 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-33.i that has 2 procedures, 72 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 23:33:20,272 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:33:20,293 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;@71b50085, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:33:20,293 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 23:33:20,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-13 23:33:20,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-13 23:33:20,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:33:20,323 INFO L215 NwaCegarLoop]: trace histogram [42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:33:20,323 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:33:20,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:33:20,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1960253132, now seen corresponding path program 1 times [2024-11-13 23:33:20,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:33:20,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964564411] [2024-11-13 23:33:20,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:20,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:33:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:30,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 26 proven. 91 refuted. 0 times theorem prover too weak. 1605 trivial. 0 not checked. [2024-11-13 23:33:30,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:33:30,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964564411] [2024-11-13 23:33:30,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964564411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:33:30,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965358366] [2024-11-13 23:33:30,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:30,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:33:30,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08271798-7f6b-41ff-9723-e578cd9f99fc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:33:30,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08271798-7f6b-41ff-9723-e578cd9f99fc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:33:30,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08271798-7f6b-41ff-9723-e578cd9f99fc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 23:33:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:30,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 23:33:30,875 INFO L278 TraceCheckSpWp]: Computing forward predicates...