./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.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_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/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_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/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_a3bdc077-ca07-41d6-a504-bbe3c3295e01/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 6b537bfce1176c41c6bc215444effcd63b1e343cf1b15ee69a282ebedb146c69 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:45:00,270 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:45:00,343 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:45:00,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:45:00,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:45:00,375 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:45:00,376 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:45:00,376 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:45:00,377 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:45:00,377 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:45:00,377 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:45:00,377 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:45:00,377 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:45:00,377 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:45:00,378 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:45:00,378 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:45:00,378 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:45:00,378 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:45:00,378 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:45:00,378 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:45:00,379 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:45:00,379 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:45:00,379 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:45:00,379 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:45:00,380 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:45:00,380 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:45:00,380 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:45:00,380 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:45:00,380 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:45:00,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:45:00,381 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:45:00,381 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:45:00,381 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:45:00,381 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:45:00,381 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:45:00,381 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:45:00,382 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:45:00,382 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:45:00,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:45:00,382 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:45:00,382 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:45:00,382 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:45:00,382 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:45:00,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:45:00,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:45:00,383 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:45:00,383 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:45:00,383 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_a3bdc077-ca07-41d6-a504-bbe3c3295e01/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 -> 6b537bfce1176c41c6bc215444effcd63b1e343cf1b15ee69a282ebedb146c69 [2024-11-14 03:45:00,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:45:00,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:45:00,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:45:00,706 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:45:00,707 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:45:00,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c Unable to find full path for "g++" [2024-11-14 03:45:02,527 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:45:02,851 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:45:02,854 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c [2024-11-14 03:45:02,865 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/data/aadc398ee/f9a178af469c454986cf878fcc2807bc/FLAG4455a3ae0 [2024-11-14 03:45:02,888 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/data/aadc398ee/f9a178af469c454986cf878fcc2807bc [2024-11-14 03:45:02,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:45:02,893 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:45:02,895 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:45:02,896 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:45:02,901 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:45:02,902 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:45:02" (1/1) ... [2024-11-14 03:45:02,904 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@754ff973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:02, skipping insertion in model container [2024-11-14 03:45:02,905 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:45:02" (1/1) ... [2024-11-14 03:45:02,923 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:45:03,063 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_a3bdc077-ca07-41d6-a504-bbe3c3295e01/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c[588,601] [2024-11-14 03:45:03,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:45:03,094 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:45:03,104 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_a3bdc077-ca07-41d6-a504-bbe3c3295e01/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c[588,601] [2024-11-14 03:45:03,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:45:03,125 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:45:03,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:03 WrapperNode [2024-11-14 03:45:03,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:45:03,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:45:03,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:45:03,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:45:03,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:03" (1/1) ... [2024-11-14 03:45:03,139 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:03" (1/1) ... [2024-11-14 03:45:03,155 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 48 [2024-11-14 03:45:03,158 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:45:03,158 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:45:03,159 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:45:03,159 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:45:03,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:03" (1/1) ... [2024-11-14 03:45:03,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:03" (1/1) ... [2024-11-14 03:45:03,172 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:03" (1/1) ... [2024-11-14 03:45:03,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:03" (1/1) ... [2024-11-14 03:45:03,177 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:03" (1/1) ... [2024-11-14 03:45:03,183 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:03" (1/1) ... [2024-11-14 03:45:03,184 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:03" (1/1) ... [2024-11-14 03:45:03,188 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:03" (1/1) ... [2024-11-14 03:45:03,189 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:45:03,190 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:45:03,193 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:45:03,194 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:45:03,195 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:03" (1/1) ... [2024-11-14 03:45:03,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:45:03,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:45:03,230 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:45:03,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:45:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:45:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:45:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:45:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:45:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 03:45:03,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 03:45:03,343 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:45:03,345 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:45:03,557 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-11-14 03:45:03,559 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:45:03,593 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:45:03,593 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 03:45:03,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:45:03 BoogieIcfgContainer [2024-11-14 03:45:03,597 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:45:03,600 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:45:03,600 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:45:03,604 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:45:03,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:45:02" (1/3) ... [2024-11-14 03:45:03,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a0aff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:45:03, skipping insertion in model container [2024-11-14 03:45:03,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:03" (2/3) ... [2024-11-14 03:45:03,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a0aff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:45:03, skipping insertion in model container [2024-11-14 03:45:03,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:45:03" (3/3) ... [2024-11-14 03:45:03,610 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound1.c [2024-11-14 03:45:03,626 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:45:03,628 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG cohencu-ll_unwindbound1.c that has 2 procedures, 23 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 03:45:03,695 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:45:03,713 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;@3cfdca58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:45:03,713 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:45:03,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-14 03:45:03,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 03:45:03,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:45:03,727 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 03:45:03,728 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:45:03,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:45:03,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1409108064, now seen corresponding path program 1 times [2024-11-14 03:45:03,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:45:03,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520514346] [2024-11-14 03:45:03,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:45:03,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:45:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:45:03,900 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 03:45:03,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:45:03,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520514346] [2024-11-14 03:45:03,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520514346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:45:03,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:45:03,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:45:03,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99630126] [2024-11-14 03:45:03,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:45:03,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 03:45:03,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:45:03,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 03:45:03,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 03:45:03,938 INFO L87 Difference]: Start difference. First operand has 23 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:45:03,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:45:03,965 INFO L93 Difference]: Finished difference Result 45 states and 82 transitions. [2024-11-14 03:45:03,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 03:45:03,968 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-14 03:45:03,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:45:03,974 INFO L225 Difference]: With dead ends: 45 [2024-11-14 03:45:03,974 INFO L226 Difference]: Without dead ends: 21 [2024-11-14 03:45:03,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 03:45:03,981 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:45:03,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:45:03,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-14 03:45:04,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-14 03:45:04,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 03:45:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 32 transitions. [2024-11-14 03:45:04,014 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 32 transitions. Word has length 6 [2024-11-14 03:45:04,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:45:04,014 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 32 transitions. [2024-11-14 03:45:04,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:45:04,015 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 32 transitions. [2024-11-14 03:45:04,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 03:45:04,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:45:04,015 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:45:04,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:45:04,016 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:45:04,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:45:04,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1262155372, now seen corresponding path program 1 times [2024-11-14 03:45:04,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:45:04,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933873767] [2024-11-14 03:45:04,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:45:04,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:45:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:45:04,139 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 03:45:04,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:45:04,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933873767] [2024-11-14 03:45:04,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933873767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:45:04,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:45:04,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:45:04,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260117601] [2024-11-14 03:45:04,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:45:04,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:45:04,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:45:04,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:45:04,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:45:04,141 INFO L87 Difference]: Start difference. First operand 21 states and 32 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:45:04,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:45:04,166 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2024-11-14 03:45:04,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:45:04,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-14 03:45:04,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:45:04,168 INFO L225 Difference]: With dead ends: 35 [2024-11-14 03:45:04,168 INFO L226 Difference]: Without dead ends: 23 [2024-11-14 03:45:04,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:45:04,169 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:45:04,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:45:04,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-14 03:45:04,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-14 03:45:04,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 03:45:04,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2024-11-14 03:45:04,177 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 34 transitions. Word has length 7 [2024-11-14 03:45:04,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:45:04,177 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 34 transitions. [2024-11-14 03:45:04,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:45:04,178 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2024-11-14 03:45:04,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 03:45:04,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:45:04,178 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:45:04,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:45:04,178 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:45:04,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:45:04,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1260606240, now seen corresponding path program 1 times [2024-11-14 03:45:04,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:45:04,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250108271] [2024-11-14 03:45:04,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:45:04,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:45:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:45:04,452 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 03:45:04,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:45:04,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250108271] [2024-11-14 03:45:04,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250108271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:45:04,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:45:04,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:45:04,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386182182] [2024-11-14 03:45:04,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:45:04,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:45:04,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:45:04,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:45:04,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:45:04,455 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:45:04,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:45:04,582 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2024-11-14 03:45:04,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:45:04,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-14 03:45:04,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:45:04,583 INFO L225 Difference]: With dead ends: 29 [2024-11-14 03:45:04,584 INFO L226 Difference]: Without dead ends: 27 [2024-11-14 03:45:04,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:45:04,588 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:45:04,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 78 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:45:04,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-14 03:45:04,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-14 03:45:04,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 03:45:04,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2024-11-14 03:45:04,607 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 7 [2024-11-14 03:45:04,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:45:04,607 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2024-11-14 03:45:04,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:45:04,608 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2024-11-14 03:45:04,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 03:45:04,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:45:04,608 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:45:04,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:45:04,609 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:45:04,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:45:04,609 INFO L85 PathProgramCache]: Analyzing trace with hash 136342820, now seen corresponding path program 1 times [2024-11-14 03:45:04,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:45:04,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356366651] [2024-11-14 03:45:04,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:45:04,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:45:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:45:04,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091993741] [2024-11-14 03:45:04,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:45:04,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:45:04,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:45:04,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:45:04,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:45:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:45:04,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:45:04,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:45:04,823 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 03:45:04,826 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:45:04,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:45:04,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356366651] [2024-11-14 03:45:04,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 03:45:04,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091993741] [2024-11-14 03:45:04,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091993741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:45:04,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:45:04,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:45:04,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251150689] [2024-11-14 03:45:04,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:45:04,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:45:04,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:45:04,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:45:04,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:45:04,830 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:45:05,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:45:05,007 INFO L93 Difference]: Finished difference Result 45 states and 65 transitions. [2024-11-14 03:45:05,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:45:05,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-14 03:45:05,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:45:05,010 INFO L225 Difference]: With dead ends: 45 [2024-11-14 03:45:05,010 INFO L226 Difference]: Without dead ends: 43 [2024-11-14 03:45:05,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:45:05,011 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:45:05,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 125 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:45:05,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-14 03:45:05,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2024-11-14 03:45:05,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-14 03:45:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2024-11-14 03:45:05,029 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 12 [2024-11-14 03:45:05,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:45:05,029 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2024-11-14 03:45:05,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:45:05,029 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2024-11-14 03:45:05,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 03:45:05,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:45:05,030 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:45:05,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:45:05,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:45:05,235 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:45:05,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:45:05,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1566265120, now seen corresponding path program 1 times [2024-11-14 03:45:05,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:45:05,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655519534] [2024-11-14 03:45:05,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:45:05,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:45:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:45:05,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1346162438] [2024-11-14 03:45:05,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:45:05,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:45:05,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:45:05,266 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:45:05,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:45:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:45:05,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:45:05,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:45:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:45:05,419 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:45:05,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:45:05,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655519534] [2024-11-14 03:45:05,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 03:45:05,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346162438] [2024-11-14 03:45:05,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346162438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:45:05,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:45:05,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:45:05,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582754871] [2024-11-14 03:45:05,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:45:05,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:45:05,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:45:05,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:45:05,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:45:05,420 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:45:05,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:45:05,572 INFO L93 Difference]: Finished difference Result 49 states and 68 transitions. [2024-11-14 03:45:05,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:45:05,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-11-14 03:45:05,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:45:05,574 INFO L225 Difference]: With dead ends: 49 [2024-11-14 03:45:05,574 INFO L226 Difference]: Without dead ends: 47 [2024-11-14 03:45:05,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:45:05,575 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:45:05,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 116 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:45:05,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-14 03:45:05,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2024-11-14 03:45:05,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-14 03:45:05,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 59 transitions. [2024-11-14 03:45:05,601 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 59 transitions. Word has length 17 [2024-11-14 03:45:05,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:45:05,602 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 59 transitions. [2024-11-14 03:45:05,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:45:05,602 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 59 transitions. [2024-11-14 03:45:05,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 03:45:05,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:45:05,603 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:45:05,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 03:45:05,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:45:05,804 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:45:05,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:45:05,804 INFO L85 PathProgramCache]: Analyzing trace with hash -588815772, now seen corresponding path program 1 times [2024-11-14 03:45:05,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:45:05,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989964789] [2024-11-14 03:45:05,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:45:05,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:45:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:45:05,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751675194] [2024-11-14 03:45:05,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:45:05,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:45:05,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:45:05,823 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:45:05,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:45:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:45:05,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 03:45:05,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:45:05,997 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 03:45:05,997 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:45:05,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:45:05,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989964789] [2024-11-14 03:45:05,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 03:45:05,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751675194] [2024-11-14 03:45:05,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751675194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:45:05,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:45:05,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:45:05,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632419953] [2024-11-14 03:45:05,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:45:05,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:45:05,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:45:05,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:45:05,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:45:05,998 INFO L87 Difference]: Start difference. First operand 43 states and 59 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:45:06,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:45:06,167 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2024-11-14 03:45:06,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:45:06,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2024-11-14 03:45:06,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:45:06,168 INFO L225 Difference]: With dead ends: 57 [2024-11-14 03:45:06,168 INFO L226 Difference]: Without dead ends: 45 [2024-11-14 03:45:06,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:45:06,169 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:45:06,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 114 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:45:06,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-14 03:45:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-14 03:45:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-14 03:45:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-11-14 03:45:06,192 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 22 [2024-11-14 03:45:06,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:45:06,192 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-11-14 03:45:06,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:45:06,192 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-11-14 03:45:06,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-14 03:45:06,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:45:06,193 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:45:06,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 03:45:06,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-14 03:45:06,394 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:45:06,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:45:06,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1301226262, now seen corresponding path program 1 times [2024-11-14 03:45:06,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:45:06,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715904125] [2024-11-14 03:45:06,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:45:06,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:45:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:45:06,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1423141953] [2024-11-14 03:45:06,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:45:06,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:45:06,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:45:06,430 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:45:06,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:45:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 03:45:06,493 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 03:45:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 03:45:06,545 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 03:45:06,545 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 03:45:06,547 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 03:45:06,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 03:45:06,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:45:06,752 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:45:06,775 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 03:45:06,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 03:45:06 BoogieIcfgContainer [2024-11-14 03:45:06,778 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 03:45:06,778 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 03:45:06,778 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 03:45:06,779 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 03:45:06,779 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:45:03" (3/4) ... [2024-11-14 03:45:06,780 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-14 03:45:06,831 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 03:45:06,831 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 03:45:06,832 INFO L158 Benchmark]: Toolchain (without parser) took 3939.93ms. Allocated memory is still 117.4MB. Free memory was 93.8MB in the beginning and 72.3MB in the end (delta: 21.5MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2024-11-14 03:45:06,832 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 142.6MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:45:06,833 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.71ms. Allocated memory is still 117.4MB. Free memory was 93.8MB in the beginning and 82.2MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:45:06,833 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.21ms. Allocated memory is still 117.4MB. Free memory was 82.2MB in the beginning and 80.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:45:06,833 INFO L158 Benchmark]: Boogie Preprocessor took 31.25ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 80.1MB in the end (delta: 793.1kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:45:06,833 INFO L158 Benchmark]: RCFGBuilder took 407.30ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 67.9MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:45:06,834 INFO L158 Benchmark]: TraceAbstraction took 3178.12ms. Allocated memory is still 117.4MB. Free memory was 67.1MB in the beginning and 75.4MB in the end (delta: -8.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:45:06,834 INFO L158 Benchmark]: Witness Printer took 53.19ms. Allocated memory is still 117.4MB. Free memory was 75.4MB in the beginning and 72.3MB in the end (delta: 3.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:45:06,837 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 142.6MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.71ms. Allocated memory is still 117.4MB. Free memory was 93.8MB in the beginning and 82.2MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.21ms. Allocated memory is still 117.4MB. Free memory was 82.2MB in the beginning and 80.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.25ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 80.1MB in the end (delta: 793.1kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 407.30ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 67.9MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3178.12ms. Allocated memory is still 117.4MB. Free memory was 67.1MB in the beginning and 75.4MB in the end (delta: -8.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 53.19ms. Allocated memory is still 117.4MB. Free memory was 75.4MB in the beginning and 72.3MB in the end (delta: 3.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] short a; [L25] long long n, x, y, z; [L26] a = __VERIFIER_nondet_ushort() [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 VAL [a=32767, counter=0, n=0, x=0, y=1, z=6] [L33] EXPR counter++ VAL [a=32767, counter=1, n=0, x=0, y=1, z=6] [L33] COND TRUE counter++<1 [L34] CALL __VERIFIER_assert(z == 6 * n + 6) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L34] RET __VERIFIER_assert(z == 6 * n + 6) VAL [a=32767, counter=1, n=0, x=0, y=1, z=6] [L35] CALL __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L35] RET __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) VAL [a=32767, counter=1, n=0, x=0, y=1, z=6] [L36] CALL __VERIFIER_assert(x == n * n * n) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L36] RET __VERIFIER_assert(x == n * n * n) VAL [a=32767, counter=1, n=0, x=0, y=1, z=6] [L37] CALL __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L37] RET __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) VAL [a=32767, counter=1, n=0, x=0, y=1, z=6] [L38] CALL __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L38] RET __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) VAL [a=32767, counter=1, n=0, x=0, y=1, z=6] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [a=32767, counter=1, n=1, x=1, y=7, z=12] [L33] EXPR counter++ VAL [a=32767, counter=2, n=1, x=1, y=7, z=12] [L33] COND FALSE !(counter++<1) [L48] CALL __VERIFIER_assert(z == 6*n + 6) VAL [\old(cond)=1, counter=2] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L48] RET __VERIFIER_assert(z == 6*n + 6) VAL [a=32767, counter=2, n=1, x=1, y=7, z=12] [L49] CALL __VERIFIER_assert(6*a*x - x*z + 12*x == 0) VAL [\old(cond)=0, counter=2] [L15] COND TRUE !(cond) VAL [\old(cond)=0, counter=2] [L17] reach_error() VAL [\old(cond)=0, counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 7, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 51 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 551 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 361 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 165 IncrementalHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 190 mSDtfsCounter, 165 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=6, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 202 NumberOfCodeBlocks, 202 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 213 SizeOfPredicates, 3 NumberOfNonLiveVariables, 195 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 28/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-14 03:45:06,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3bdc077-ca07-41d6-a504-bbe3c3295e01/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE