./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/pcompf.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_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/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_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/pcompf.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/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_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/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 f995d1a14a0e61f10b2f5817b1ff2bf8d1511dbe7297ad48450a11ed6f3a9160 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:03:33,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:03:33,562 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:03:33,568 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:03:33,568 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:03:33,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:03:33,608 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:03:33,608 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:03:33,609 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:03:33,609 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:03:33,610 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:03:33,610 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:03:33,611 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:03:33,611 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:03:33,611 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:03:33,611 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:03:33,611 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:03:33,611 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:03:33,611 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:03:33,611 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:03:33,611 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:03:33,612 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:03:33,613 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:03:33,614 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:03:33,614 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:03:33,614 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:03:33,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:03:33,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:03:33,614 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:03:33,615 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:03:33,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:03:33,615 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:03:33,615 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:03:33,615 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:03:33,616 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:03:33,616 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:03:33,616 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:03:33,616 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:03:33,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:03:33,616 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:03:33,617 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:03:33,617 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:03:33,617 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:03:33,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:03:33,617 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:03:33,617 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:03:33,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:03:33,617 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_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/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 -> f995d1a14a0e61f10b2f5817b1ff2bf8d1511dbe7297ad48450a11ed6f3a9160 [2024-11-14 05:03:34,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:03:34,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:03:34,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:03:34,066 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:03:34,067 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:03:34,068 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/array-fpi/pcompf.c Unable to find full path for "g++" [2024-11-14 05:03:36,254 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:03:36,624 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:03:36,629 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/sv-benchmarks/c/array-fpi/pcompf.c [2024-11-14 05:03:36,657 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/data/ae05bc95c/ea5cfa37b5d543d1aa225e2f0d8b405f/FLAG02ea1e8b0 [2024-11-14 05:03:36,846 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/data/ae05bc95c/ea5cfa37b5d543d1aa225e2f0d8b405f [2024-11-14 05:03:36,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:03:36,851 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:03:36,853 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:03:36,854 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:03:36,861 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:03:36,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:03:36" (1/1) ... [2024-11-14 05:03:36,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d5a77dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:36, skipping insertion in model container [2024-11-14 05:03:36,863 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:03:36" (1/1) ... [2024-11-14 05:03:36,884 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:03:37,055 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_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/sv-benchmarks/c/array-fpi/pcompf.c[589,602] [2024-11-14 05:03:37,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:03:37,086 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:03:37,095 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_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/sv-benchmarks/c/array-fpi/pcompf.c[589,602] [2024-11-14 05:03:37,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:03:37,123 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:03:37,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:37 WrapperNode [2024-11-14 05:03:37,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:03:37,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:03:37,125 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:03:37,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:03:37,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:37" (1/1) ... [2024-11-14 05:03:37,143 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:37" (1/1) ... [2024-11-14 05:03:37,169 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 85 [2024-11-14 05:03:37,169 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:03:37,170 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:03:37,170 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:03:37,170 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:03:37,177 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:37" (1/1) ... [2024-11-14 05:03:37,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:37" (1/1) ... [2024-11-14 05:03:37,180 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:37" (1/1) ... [2024-11-14 05:03:37,180 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:37" (1/1) ... [2024-11-14 05:03:37,187 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:37" (1/1) ... [2024-11-14 05:03:37,191 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:37" (1/1) ... [2024-11-14 05:03:37,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:37" (1/1) ... [2024-11-14 05:03:37,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:37" (1/1) ... [2024-11-14 05:03:37,195 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:03:37,196 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:03:37,196 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:03:37,196 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:03:37,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:37" (1/1) ... [2024-11-14 05:03:37,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:03:37,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:03:37,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:03:37,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:03:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:03:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:03:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 05:03:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 05:03:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:03:37,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:03:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 05:03:37,357 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:03:37,359 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:03:37,647 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-14 05:03:37,647 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:03:37,725 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:03:37,725 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-14 05:03:37,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:03:37 BoogieIcfgContainer [2024-11-14 05:03:37,726 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:03:37,728 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:03:37,728 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:03:37,736 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:03:37,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:03:36" (1/3) ... [2024-11-14 05:03:37,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338c4b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:03:37, skipping insertion in model container [2024-11-14 05:03:37,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:37" (2/3) ... [2024-11-14 05:03:37,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338c4b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:03:37, skipping insertion in model container [2024-11-14 05:03:37,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:03:37" (3/3) ... [2024-11-14 05:03:37,739 INFO L112 eAbstractionObserver]: Analyzing ICFG pcompf.c [2024-11-14 05:03:37,763 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:03:37,765 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pcompf.c that has 1 procedures, 12 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-14 05:03:37,837 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:03:37,854 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;@6ade8e5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:03:37,854 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:03:37,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 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 05:03:37,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 05:03:37,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:37,870 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:37,871 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:03:37,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:37,880 INFO L85 PathProgramCache]: Analyzing trace with hash -135649139, now seen corresponding path program 1 times [2024-11-14 05:03:37,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:37,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29031933] [2024-11-14 05:03:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:37,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:03:38,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809385319] [2024-11-14 05:03:38,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:38,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:38,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:03:38,039 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:03:38,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:03:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:38,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 05:03:38,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:03:38,456 INFO L349 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2024-11-14 05:03:38,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 184 [2024-11-14 05:03:38,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 05:03:38,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:03:38,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-14 05:03:38,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 05:03:38,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 05:03:38,905 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:03:38,919 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:03:38,951 INFO L349 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2024-11-14 05:03:38,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 41 [2024-11-14 05:03:39,061 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:03:39,070 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:03:39,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 59 [2024-11-14 05:03:39,291 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:03:39,298 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2024-11-14 05:03:39,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 14 [2024-11-14 05:03:39,415 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-14 05:03:39,600 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 05:03:39,600 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:03:39,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:39,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29031933] [2024-11-14 05:03:39,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:03:39,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809385319] [2024-11-14 05:03:39,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809385319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:03:39,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:03:39,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:03:39,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278192450] [2024-11-14 05:03:39,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:03:39,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:03:39,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:39,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:03:39,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:03:39,645 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 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 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:03:39,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:39,779 INFO L93 Difference]: Finished difference Result 31 states and 44 transitions. [2024-11-14 05:03:39,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:03:39,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-14 05:03:39,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:39,788 INFO L225 Difference]: With dead ends: 31 [2024-11-14 05:03:39,789 INFO L226 Difference]: Without dead ends: 21 [2024-11-14 05:03:39,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:03:39,795 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:39,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 16 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:03:39,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-14 05:03:39,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2024-11-14 05:03:39,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 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 05:03:39,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2024-11-14 05:03:39,837 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 21 transitions. Word has length 8 [2024-11-14 05:03:39,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:39,837 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 21 transitions. [2024-11-14 05:03:39,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:03:39,838 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 21 transitions. [2024-11-14 05:03:39,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 05:03:39,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:39,838 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:39,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 05:03:40,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-14 05:03:40,039 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:03:40,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:40,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1704020213, now seen corresponding path program 1 times [2024-11-14 05:03:40,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:40,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980936977] [2024-11-14 05:03:40,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:40,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:40,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:03:40,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:40,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980936977] [2024-11-14 05:03:40,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980936977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:03:40,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409607832] [2024-11-14 05:03:40,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:40,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:40,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:03:40,336 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:03:40,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:03:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:40,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:03:40,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:03:40,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:03:40,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:03:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:03:40,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409607832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:03:40,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2017956125] [2024-11-14 05:03:40,540 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-14 05:03:40,541 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:03:40,544 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:03:40,550 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:03:40,550 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:03:46,237 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:03:46,779 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '165#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= ~N~0 1) (not (= 0 (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) |ULTIMATE.start_main_~c~0#1.offset|))))' at error location [2024-11-14 05:03:46,779 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:03:46,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:03:46,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-14 05:03:46,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021853370] [2024-11-14 05:03:46,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:03:46,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:03:46,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:46,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:03:46,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:03:46,782 INFO L87 Difference]: Start difference. First operand 15 states and 21 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:03:47,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:47,233 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2024-11-14 05:03:47,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:03:47,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-14 05:03:47,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:47,235 INFO L225 Difference]: With dead ends: 33 [2024-11-14 05:03:47,235 INFO L226 Difference]: Without dead ends: 27 [2024-11-14 05:03:47,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-14 05:03:47,237 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:47,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 15 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:03:47,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-14 05:03:47,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 17. [2024-11-14 05:03:47,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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 05:03:47,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2024-11-14 05:03:47,244 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 9 [2024-11-14 05:03:47,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:47,244 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2024-11-14 05:03:47,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:03:47,244 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2024-11-14 05:03:47,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 05:03:47,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:47,245 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:47,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 05:03:47,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:47,450 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:03:47,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:47,450 INFO L85 PathProgramCache]: Analyzing trace with hash 55521873, now seen corresponding path program 1 times [2024-11-14 05:03:47,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:47,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860783024] [2024-11-14 05:03:47,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:47,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:47,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:03:47,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:47,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860783024] [2024-11-14 05:03:47,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860783024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:03:47,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:03:47,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:03:47,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452846890] [2024-11-14 05:03:47,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:03:47,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:03:47,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:47,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:03:47,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:03:47,713 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:03:47,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:47,860 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2024-11-14 05:03:47,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:03:47,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-14 05:03:47,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:47,861 INFO L225 Difference]: With dead ends: 30 [2024-11-14 05:03:47,861 INFO L226 Difference]: Without dead ends: 22 [2024-11-14 05:03:47,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:03:47,863 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:47,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 15 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:03:47,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-14 05:03:47,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2024-11-14 05:03:47,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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 05:03:47,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-11-14 05:03:47,869 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 9 [2024-11-14 05:03:47,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:47,870 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-11-14 05:03:47,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:03:47,870 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-11-14 05:03:47,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 05:03:47,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:47,871 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:47,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 05:03:47,871 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:03:47,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:47,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1972775143, now seen corresponding path program 1 times [2024-11-14 05:03:47,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:47,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271581325] [2024-11-14 05:03:47,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:47,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:03:47,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23136595] [2024-11-14 05:03:47,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:47,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:47,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:03:47,944 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:03:47,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 05:03:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:48,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-14 05:03:48,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:03:48,626 INFO L349 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2024-11-14 05:03:48,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 184 [2024-11-14 05:03:48,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 05:03:48,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 05:03:48,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:03:48,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-14 05:03:48,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 05:03:49,110 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:03:49,154 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:03:49,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 90 [2024-11-14 05:03:49,477 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:03:49,541 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:03:49,620 INFO L349 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2024-11-14 05:03:49,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 81 treesize of output 67 [2024-11-14 05:03:49,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:03:49,965 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:03:49,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 12 [2024-11-14 05:03:50,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:03:51,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:03:51,583 INFO L349 Elim1Store]: treesize reduction 25, result has 41.9 percent of original size [2024-11-14 05:03:51,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 371 treesize of output 360 [2024-11-14 05:03:51,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2024-11-14 05:03:52,470 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2024-11-14 05:03:52,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 61 treesize of output 62 [2024-11-14 05:03:52,949 INFO L349 Elim1Store]: treesize reduction 24, result has 45.5 percent of original size [2024-11-14 05:03:52,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 53 treesize of output 51 [2024-11-14 05:03:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:03:53,235 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:03:53,997 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 05:03:53,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:53,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271581325] [2024-11-14 05:03:53,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:03:53,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23136595] [2024-11-14 05:03:53,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23136595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:03:53,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [521553562] [2024-11-14 05:03:54,001 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-14 05:03:54,001 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:03:54,001 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:03:54,002 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:03:54,002 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:03:54,406 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:03:55,222 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '402#(and (= |ULTIMATE.start_main_~i~0#1| 0) (<= 1 ~N~0) (not (= 0 (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) |ULTIMATE.start_main_~c~0#1.offset|))))' at error location [2024-11-14 05:03:55,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:03:55,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:03:55,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2024-11-14 05:03:55,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274262945] [2024-11-14 05:03:55,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:03:55,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 05:03:55,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:55,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 05:03:55,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=461, Unknown=4, NotChecked=0, Total=552 [2024-11-14 05:03:55,224 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:03:57,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:57,102 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2024-11-14 05:03:57,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 05:03:57,102 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-14 05:03:57,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:57,104 INFO L225 Difference]: With dead ends: 43 [2024-11-14 05:03:57,104 INFO L226 Difference]: Without dead ends: 41 [2024-11-14 05:03:57,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=163, Invalid=763, Unknown=4, NotChecked=0, Total=930 [2024-11-14 05:03:57,106 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 47 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:57,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 40 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 173 Invalid, 1 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 05:03:57,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-14 05:03:57,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2024-11-14 05:03:57,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 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 05:03:57,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2024-11-14 05:03:57,119 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 39 transitions. Word has length 11 [2024-11-14 05:03:57,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:57,119 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 39 transitions. [2024-11-14 05:03:57,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:03:57,120 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2024-11-14 05:03:57,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 05:03:57,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:57,120 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:57,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 05:03:57,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:57,324 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:03:57,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:57,325 INFO L85 PathProgramCache]: Analyzing trace with hash 445549839, now seen corresponding path program 1 times [2024-11-14 05:03:57,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:57,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431249891] [2024-11-14 05:03:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:57,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:57,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:03:57,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:57,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431249891] [2024-11-14 05:03:57,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431249891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:03:57,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024874206] [2024-11-14 05:03:57,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:57,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:57,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:03:57,591 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:03:57,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:03:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:57,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:03:57,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:03:57,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:03:57,863 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:03:57,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024874206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:03:57,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:03:57,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-11-14 05:03:57,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673377585] [2024-11-14 05:03:57,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:03:57,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:03:57,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:57,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:03:57,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:03:57,864 INFO L87 Difference]: Start difference. First operand 28 states and 39 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 05:03:58,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:58,105 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2024-11-14 05:03:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:03:58,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 11 [2024-11-14 05:03:58,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:58,107 INFO L225 Difference]: With dead ends: 42 [2024-11-14 05:03:58,107 INFO L226 Difference]: Without dead ends: 31 [2024-11-14 05:03:58,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:03:58,108 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:58,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 15 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:03:58,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-14 05:03:58,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2024-11-14 05:03:58,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 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 05:03:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2024-11-14 05:03:58,118 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2024-11-14 05:03:58,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:58,119 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2024-11-14 05:03:58,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 05:03:58,119 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2024-11-14 05:03:58,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 05:03:58,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:58,120 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:58,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 05:03:58,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:58,320 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:03:58,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:58,321 INFO L85 PathProgramCache]: Analyzing trace with hash 15641113, now seen corresponding path program 2 times [2024-11-14 05:03:58,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:58,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602330327] [2024-11-14 05:03:58,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:58,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:58,806 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:03:58,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:58,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602330327] [2024-11-14 05:03:58,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602330327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:03:58,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431756939] [2024-11-14 05:03:58,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:03:58,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:58,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:03:58,809 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:03:58,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 05:03:58,914 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:03:58,914 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:03:58,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:03:58,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:03:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:03:59,103 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:03:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:03:59,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431756939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:03:59,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [181012962] [2024-11-14 05:03:59,369 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-14 05:03:59,369 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:03:59,370 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:03:59,370 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:03:59,370 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:03:59,692 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:04:00,548 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '780#(and (= |ULTIMATE.start_main_~i~0#1| 0) (<= 1 ~N~0) (not (= 0 (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) |ULTIMATE.start_main_~c~0#1.offset|))))' at error location [2024-11-14 05:04:00,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:04:00,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:04:00,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-14 05:04:00,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562467053] [2024-11-14 05:04:00,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:04:00,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 05:04:00,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:04:00,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 05:04:00,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-11-14 05:04:00,551 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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 05:04:02,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:04:02,164 INFO L93 Difference]: Finished difference Result 86 states and 106 transitions. [2024-11-14 05:04:02,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-14 05:04:02,165 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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 13 [2024-11-14 05:04:02,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:04:02,166 INFO L225 Difference]: With dead ends: 86 [2024-11-14 05:04:02,166 INFO L226 Difference]: Without dead ends: 75 [2024-11-14 05:04:02,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=225, Invalid=831, Unknown=0, NotChecked=0, Total=1056 [2024-11-14 05:04:02,168 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 70 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:04:02,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 106 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 05:04:02,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-14 05:04:02,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 32. [2024-11-14 05:04:02,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 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 05:04:02,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2024-11-14 05:04:02,183 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 13 [2024-11-14 05:04:02,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:04:02,183 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2024-11-14 05:04:02,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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 05:04:02,183 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2024-11-14 05:04:02,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 05:04:02,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:04:02,184 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:04:02,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-14 05:04:02,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:04:02,389 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:04:02,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:04:02,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1440324761, now seen corresponding path program 3 times [2024-11-14 05:04:02,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:04:02,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501897244] [2024-11-14 05:04:02,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:04:02,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:04:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:04:02,725 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:04:02,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:04:02,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501897244] [2024-11-14 05:04:02,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501897244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:04:02,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158396508] [2024-11-14 05:04:02,726 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:04:02,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:04:02,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:04:02,728 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:04:02,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 05:04:02,820 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:04:02,820 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:04:02,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:04:02,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:04:03,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:04:03,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:04:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:04:03,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158396508] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:04:03,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1132437213] [2024-11-14 05:04:03,147 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-14 05:04:03,147 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:04:03,147 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:04:03,147 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:04:03,147 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:04:03,887 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:04:04,496 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1084#(and (= |ULTIMATE.start_main_~i~0#1| 0) (<= 1 ~N~0) (not (= 0 (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) |ULTIMATE.start_main_~c~0#1.offset|))))' at error location [2024-11-14 05:04:04,496 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:04:04,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:04:04,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 12 [2024-11-14 05:04:04,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630781359] [2024-11-14 05:04:04,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:04:04,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 05:04:04,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:04:04,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 05:04:04,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-14 05:04:04,498 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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 05:04:04,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:04:04,904 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2024-11-14 05:04:04,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:04:04,906 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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 13 [2024-11-14 05:04:04,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:04:04,907 INFO L225 Difference]: With dead ends: 61 [2024-11-14 05:04:04,907 INFO L226 Difference]: Without dead ends: 45 [2024-11-14 05:04:04,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2024-11-14 05:04:04,908 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 24 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:04:04,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:04:04,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-14 05:04:04,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2024-11-14 05:04:04,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 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 05:04:04,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-14 05:04:04,923 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 13 [2024-11-14 05:04:04,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:04:04,923 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-14 05:04:04,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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 05:04:04,924 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-14 05:04:04,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 05:04:04,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:04:04,924 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:04:04,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-14 05:04:05,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:04:05,125 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:04:05,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:04:05,125 INFO L85 PathProgramCache]: Analyzing trace with hash -816143859, now seen corresponding path program 4 times [2024-11-14 05:04:05,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:04:05,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223842499] [2024-11-14 05:04:05,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:04:05,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:04:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:04:05,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1434146251] [2024-11-14 05:04:05,182 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:04:05,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:04:05,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:04:05,184 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:04:05,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 05:04:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:04:05,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-14 05:04:05,301 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:04:05,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-14 05:04:05,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:04:05,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:04:05,446 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-14 05:04:05,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2024-11-14 05:04:05,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 05:04:05,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:04:05,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:04:05,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:04:05,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:04:05,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-14 05:04:05,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:04:05,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-14 05:04:06,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:04:06,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:04:06,841 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_284 (Array Int Int)) (v_ArrVal_286 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_284) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_286) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) 0)) is different from false [2024-11-14 05:04:06,866 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2024-11-14 05:04:06,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:04:06,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223842499] [2024-11-14 05:04:06,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:04:06,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434146251] [2024-11-14 05:04:06,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434146251] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:04:06,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [455673432] [2024-11-14 05:04:06,869 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-14 05:04:06,869 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:04:06,870 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:04:06,870 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:04:06,870 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:04:07,231 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:04:07,967 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1337#(and (= |ULTIMATE.start_main_~i~0#1| 0) (<= 1 ~N~0) (not (= 0 (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) |ULTIMATE.start_main_~c~0#1.offset|))))' at error location [2024-11-14 05:04:07,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:04:07,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:04:07,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-14 05:04:07,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234380658] [2024-11-14 05:04:07,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:04:07,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-14 05:04:07,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:04:07,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-14 05:04:07,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=4, NotChecked=40, Total=506 [2024-11-14 05:04:07,969 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 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 05:04:08,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:04:08,688 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2024-11-14 05:04:08,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:04:08,688 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-14 05:04:08,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:04:08,689 INFO L225 Difference]: With dead ends: 39 [2024-11-14 05:04:08,689 INFO L226 Difference]: Without dead ends: 37 [2024-11-14 05:04:08,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=4, NotChecked=48, Total=702 [2024-11-14 05:04:08,691 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 69 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:04:08,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 26 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 95 Invalid, 0 Unknown, 21 Unchecked, 0.4s Time] [2024-11-14 05:04:08,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-14 05:04:08,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2024-11-14 05:04:08,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 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 05:04:08,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-14 05:04:08,703 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 14 [2024-11-14 05:04:08,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:04:08,703 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-14 05:04:08,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 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 05:04:08,704 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-14 05:04:08,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 05:04:08,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:04:08,704 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:04:08,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-14 05:04:08,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:04:08,905 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:04:08,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:04:08,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1393017603, now seen corresponding path program 1 times [2024-11-14 05:04:08,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:04:08,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568058845] [2024-11-14 05:04:08,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:04:08,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:04:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:04:08,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080175785] [2024-11-14 05:04:08,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:04:08,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:04:08,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:04:08,975 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:04:08,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 05:04:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:04:09,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-14 05:04:09,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:04:09,110 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-14 05:04:09,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2024-11-14 05:04:09,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:04:09,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-14 05:04:09,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 05:04:09,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:04:09,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-14 05:04:09,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2024-11-14 05:04:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:04:10,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:04:11,560 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:04:11,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:04:11,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568058845] [2024-11-14 05:04:11,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:04:11,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080175785] [2024-11-14 05:04:11,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080175785] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:04:11,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [165585330] [2024-11-14 05:04:11,562 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-14 05:04:11,563 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:04:11,563 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:04:11,563 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:04:11,563 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:04:11,942 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:04:12,987 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1566#(and (<= 1 ~N~0) (<= 0 |ULTIMATE.start_main_~i~0#1|))' at error location [2024-11-14 05:04:12,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:04:12,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:04:12,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2024-11-14 05:04:12,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414025910] [2024-11-14 05:04:12,988 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:04:12,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-14 05:04:12,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:04:12,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-14 05:04:12,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=700, Unknown=8, NotChecked=0, Total=812 [2024-11-14 05:04:12,989 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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 05:04:13,525 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (or (forall ((v_ArrVal_334 Int)) (not (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse0 .cse1 v_ArrVal_334)) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)))) (= (select .cse0 |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) (forall ((v_ArrVal_334 Int) (v_ArrVal_333 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_333))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~b~0#1.base|))) (or (not (= (select (select (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse3 .cse1 v_ArrVal_334)) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) 0)) (= (select .cse3 |c_ULTIMATE.start_main_~b~0#1.offset|) 1))))))) is different from false [2024-11-14 05:04:15,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:04:15,071 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2024-11-14 05:04:15,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 05:04:15,072 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-14 05:04:15,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:04:15,072 INFO L225 Difference]: With dead ends: 48 [2024-11-14 05:04:15,073 INFO L226 Difference]: Without dead ends: 46 [2024-11-14 05:04:15,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=237, Invalid=1164, Unknown=9, NotChecked=72, Total=1482 [2024-11-14 05:04:15,074 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 79 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:04:15,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 68 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 196 Invalid, 0 Unknown, 41 Unchecked, 0.8s Time] [2024-11-14 05:04:15,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-14 05:04:15,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2024-11-14 05:04:15,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 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 05:04:15,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2024-11-14 05:04:15,092 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 14 [2024-11-14 05:04:15,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:04:15,092 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2024-11-14 05:04:15,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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 05:04:15,093 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2024-11-14 05:04:15,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 05:04:15,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:04:15,093 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:04:15,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-14 05:04:15,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:04:15,294 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:04:15,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:04:15,294 INFO L85 PathProgramCache]: Analyzing trace with hash 72983439, now seen corresponding path program 2 times [2024-11-14 05:04:15,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:04:15,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056435067] [2024-11-14 05:04:15,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:04:15,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:04:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:04:15,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863984040] [2024-11-14 05:04:15,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:04:15,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:04:15,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:04:15,364 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:04:15,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 05:04:15,519 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 05:04:15,519 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:04:15,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-14 05:04:15,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:04:15,538 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-14 05:04:15,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2024-11-14 05:04:15,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:04:15,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-14 05:04:15,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 05:04:15,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:04:15,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:04:16,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-14 05:04:16,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:04:16,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-14 05:04:16,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2024-11-14 05:04:16,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-11-14 05:04:17,144 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:04:17,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:04:21,076 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:04:21,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:04:21,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056435067] [2024-11-14 05:04:21,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:04:21,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863984040] [2024-11-14 05:04:21,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863984040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:04:21,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [166615747] [2024-11-14 05:04:21,079 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-14 05:04:21,079 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:04:21,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:04:21,080 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:04:21,080 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:04:21,486 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:04:22,402 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1843#(and (<= 1 ~N~0) (<= 0 |ULTIMATE.start_main_~i~0#1|))' at error location [2024-11-14 05:04:22,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:04:22,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:04:22,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 26 [2024-11-14 05:04:22,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943903689] [2024-11-14 05:04:22,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:04:22,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 05:04:22,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:04:22,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 05:04:22,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=855, Unknown=6, NotChecked=0, Total=992 [2024-11-14 05:04:22,405 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 26 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 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 05:04:24,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:04:24,165 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2024-11-14 05:04:24,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:04:24,166 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 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 17 [2024-11-14 05:04:24,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:04:24,167 INFO L225 Difference]: With dead ends: 46 [2024-11-14 05:04:24,167 INFO L226 Difference]: Without dead ends: 44 [2024-11-14 05:04:24,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=257, Invalid=1297, Unknown=6, NotChecked=0, Total=1560 [2024-11-14 05:04:24,168 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 103 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:04:24,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 20 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 05:04:24,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-14 05:04:24,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2024-11-14 05:04:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 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 05:04:24,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2024-11-14 05:04:24,187 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 17 [2024-11-14 05:04:24,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:04:24,187 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2024-11-14 05:04:24,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 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 05:04:24,188 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2024-11-14 05:04:24,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 05:04:24,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:04:24,188 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:04:24,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-14 05:04:24,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:04:24,389 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:04:24,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:04:24,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1418221273, now seen corresponding path program 3 times [2024-11-14 05:04:24,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:04:24,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615632192] [2024-11-14 05:04:24,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:04:24,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:04:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:04:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:04:24,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:04:24,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615632192] [2024-11-14 05:04:24,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615632192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:04:24,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208128240] [2024-11-14 05:04:24,797 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:04:24,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:04:24,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:04:24,799 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:04:24,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 05:04:24,892 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:04:24,892 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:04:24,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:04:24,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:04:25,320 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:04:25,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:04:25,523 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:04:25,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208128240] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:04:25,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1845775875] [2024-11-14 05:04:25,525 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-14 05:04:25,525 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:04:25,525 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:04:25,525 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:04:25,525 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:04:31,797 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:04:32,727 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2100#(and (<= 1 ~N~0) (<= 0 |ULTIMATE.start_main_~i~0#1|))' at error location [2024-11-14 05:04:32,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:04:32,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:04:32,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-11-14 05:04:32,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650010053] [2024-11-14 05:04:32,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:04:32,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 05:04:32,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:04:32,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 05:04:32,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-14 05:04:32,729 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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 05:04:33,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:04:33,332 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2024-11-14 05:04:33,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:04:33,333 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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 17 [2024-11-14 05:04:33,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:04:33,333 INFO L225 Difference]: With dead ends: 46 [2024-11-14 05:04:33,333 INFO L226 Difference]: Without dead ends: 30 [2024-11-14 05:04:33,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-14 05:04:33,334 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:04:33,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 25 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:04:33,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-14 05:04:33,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2024-11-14 05:04:33,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 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 05:04:33,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-11-14 05:04:33,345 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 17 [2024-11-14 05:04:33,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:04:33,345 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-11-14 05:04:33,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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 05:04:33,345 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-11-14 05:04:33,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 05:04:33,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:04:33,346 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:04:33,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-14 05:04:33,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:04:33,546 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:04:33,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:04:33,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1001003725, now seen corresponding path program 4 times [2024-11-14 05:04:33,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:04:33,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414731796] [2024-11-14 05:04:33,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:04:33,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:04:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:04:33,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525590929] [2024-11-14 05:04:33,593 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:04:33,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:04:33,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:04:33,595 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:04:33,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 05:04:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:04:33,707 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 05:04:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:04:33,763 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 05:04:33,763 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 05:04:33,764 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 05:04:33,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-14 05:04:33,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:04:33,969 INFO L407 BasicCegarLoop]: Path program histogram: [4, 4, 1, 1, 1, 1] [2024-11-14 05:04:33,999 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 05:04:34,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 05:04:34 BoogieIcfgContainer [2024-11-14 05:04:34,002 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 05:04:34,002 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 05:04:34,002 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 05:04:34,003 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 05:04:34,003 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:03:37" (3/4) ... [2024-11-14 05:04:34,004 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-14 05:04:34,046 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25f5cf2-dbc2-48d2-86cf-cf245ef3ada7/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 05:04:34,046 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 05:04:34,047 INFO L158 Benchmark]: Toolchain (without parser) took 57196.37ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 119.1MB in the beginning and 311.1MB in the end (delta: -192.1MB). Peak memory consumption was 90.7MB. Max. memory is 16.1GB. [2024-11-14 05:04:34,047 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 142.6MB. Free memory is still 81.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:04:34,047 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.91ms. Allocated memory is still 142.6MB. Free memory was 118.8MB in the beginning and 107.4MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:04:34,048 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.34ms. Allocated memory is still 142.6MB. Free memory was 107.4MB in the beginning and 106.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:04:34,048 INFO L158 Benchmark]: Boogie Preprocessor took 25.48ms. Allocated memory is still 142.6MB. Free memory was 106.1MB in the beginning and 105.2MB in the end (delta: 819.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:04:34,048 INFO L158 Benchmark]: RCFGBuilder took 529.83ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 90.4MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 05:04:34,048 INFO L158 Benchmark]: TraceAbstraction took 56273.60ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 89.9MB in the beginning and 315.4MB in the end (delta: -225.5MB). Peak memory consumption was 65.6MB. Max. memory is 16.1GB. [2024-11-14 05:04:34,048 INFO L158 Benchmark]: Witness Printer took 44.08ms. Allocated memory is still 427.8MB. Free memory was 315.4MB in the beginning and 311.1MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:04:34,050 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 142.6MB. Free memory is still 81.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.91ms. Allocated memory is still 142.6MB. Free memory was 118.8MB in the beginning and 107.4MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.34ms. Allocated memory is still 142.6MB. Free memory was 107.4MB in the beginning and 106.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.48ms. Allocated memory is still 142.6MB. Free memory was 106.1MB in the beginning and 105.2MB in the end (delta: 819.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 529.83ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 90.4MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 56273.60ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 89.9MB in the beginning and 315.4MB in the end (delta: -225.5MB). Peak memory consumption was 65.6MB. Max. memory is 16.1GB. * Witness Printer took 44.08ms. Allocated memory is still 427.8MB. Free memory was 315.4MB in the beginning and 311.1MB in the end (delta: 4.3MB). There was no memory consumed. 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 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L30] long long *c = malloc(sizeof(long long)*N); [L32] a[0] = 6 [L33] b[0] = 1 [L34] c[0] = 0 [L36] i=1 VAL [N=3, a={-1:0}, b={4:0}, c={5:0}, i=1] [L36] COND TRUE i