./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.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_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/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_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/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_3dc782fc-5907-4e5f-991e-95b5595d590b/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 4b2ee659e7bd0f15011c822a777a938a0e6f5b3a8f826a051cccefa88973daa0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:34:26,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:34:26,516 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:34:26,522 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:34:26,523 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:34:26,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:34:26,560 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:34:26,562 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:34:26,563 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:34:26,563 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:34:26,563 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:34:26,563 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:34:26,564 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:34:26,564 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:34:26,564 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:34:26,564 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:34:26,564 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:34:26,564 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:34:26,564 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:34:26,564 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:34:26,565 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:34:26,565 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:34:26,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:34:26,565 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:34:26,565 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:34:26,565 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:34:26,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:34:26,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:34:26,566 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:34:26,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:34:26,567 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:34:26,567 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:34:26,568 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:34:26,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:34:26,568 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:34:26,568 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:34:26,568 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:34:26,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:34:26,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:34:26,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:34:26,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:34:26,569 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:34:26,569 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:34:26,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:34:26,570 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:34:26,570 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:34:26,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:34:26,570 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_3dc782fc-5907-4e5f-991e-95b5595d590b/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 -> 4b2ee659e7bd0f15011c822a777a938a0e6f5b3a8f826a051cccefa88973daa0 [2024-11-14 04:34:26,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:34:26,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:34:26,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:34:26,908 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:34:26,909 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:34:26,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.c Unable to find full path for "g++" [2024-11-14 04:34:28,803 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:34:29,072 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:34:29,072 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.c [2024-11-14 04:34:29,080 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/data/98b18126a/208e38bd55894325bd30f19a0dd3a91b/FLAGfaf378e86 [2024-11-14 04:34:29,094 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/data/98b18126a/208e38bd55894325bd30f19a0dd3a91b [2024-11-14 04:34:29,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:34:29,098 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:34:29,099 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:34:29,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:34:29,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:34:29,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:34:29" (1/1) ... [2024-11-14 04:34:29,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bcb4df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:29, skipping insertion in model container [2024-11-14 04:34:29,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:34:29" (1/1) ... [2024-11-14 04:34:29,121 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:34:29,283 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_3dc782fc-5907-4e5f-991e-95b5595d590b/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.c[458,471] [2024-11-14 04:34:29,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:34:29,311 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:34:29,322 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_3dc782fc-5907-4e5f-991e-95b5595d590b/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.c[458,471] [2024-11-14 04:34:29,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:34:29,346 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:34:29,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:29 WrapperNode [2024-11-14 04:34:29,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:34:29,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:34:29,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:34:29,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:34:29,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:29" (1/1) ... [2024-11-14 04:34:29,363 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:29" (1/1) ... [2024-11-14 04:34:29,382 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2024-11-14 04:34:29,383 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:34:29,383 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:34:29,383 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:34:29,383 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:34:29,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:29" (1/1) ... [2024-11-14 04:34:29,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:29" (1/1) ... [2024-11-14 04:34:29,397 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:29" (1/1) ... [2024-11-14 04:34:29,398 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:29" (1/1) ... [2024-11-14 04:34:29,400 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:29" (1/1) ... [2024-11-14 04:34:29,410 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:29" (1/1) ... [2024-11-14 04:34:29,411 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:29" (1/1) ... [2024-11-14 04:34:29,412 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:29" (1/1) ... [2024-11-14 04:34:29,415 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:34:29,417 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:34:29,417 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:34:29,417 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:34:29,418 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:29" (1/1) ... [2024-11-14 04:34:29,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:34:29,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:34:29,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:34:29,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:34:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:34:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 04:34:29,489 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 04:34:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:34:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:34:29,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:34:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 04:34:29,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 04:34:29,553 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:34:29,555 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:34:29,736 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-14 04:34:29,737 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:34:29,771 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:34:29,774 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 04:34:29,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:34:29 BoogieIcfgContainer [2024-11-14 04:34:29,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:34:29,777 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:34:29,777 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:34:29,784 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:34:29,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:34:29" (1/3) ... [2024-11-14 04:34:29,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae7eb4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:34:29, skipping insertion in model container [2024-11-14 04:34:29,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:29" (2/3) ... [2024-11-14 04:34:29,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae7eb4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:34:29, skipping insertion in model container [2024-11-14 04:34:29,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:34:29" (3/3) ... [2024-11-14 04:34:29,790 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound20.c [2024-11-14 04:34:29,807 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:34:29,809 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG ps6-ll_valuebound20.c that has 3 procedures, 19 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 04:34:29,873 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:34:29,890 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;@925f36, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:34:29,890 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:34:29,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 04:34:29,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 04:34:29,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:29,908 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:29,908 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:29,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:29,913 INFO L85 PathProgramCache]: Analyzing trace with hash -847073814, now seen corresponding path program 1 times [2024-11-14 04:34:29,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:34:29,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806441789] [2024-11-14 04:34:29,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:29,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:34:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:34:30,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:34:30,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806441789] [2024-11-14 04:34:30,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806441789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:34:30,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:34:30,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:34:30,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115762150] [2024-11-14 04:34:30,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:34:30,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 04:34:30,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:34:30,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 04:34:30,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:34:30,108 INFO L87 Difference]: Start difference. First operand has 19 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 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 04:34:30,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:30,147 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2024-11-14 04:34:30,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 04:34:30,151 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 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 13 [2024-11-14 04:34:30,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:30,159 INFO L225 Difference]: With dead ends: 32 [2024-11-14 04:34:30,159 INFO L226 Difference]: Without dead ends: 17 [2024-11-14 04:34:30,163 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 04:34:30,170 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:34:30,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:34:30,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-14 04:34:30,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-14 04:34:30,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:34:30,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2024-11-14 04:34:30,212 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 13 [2024-11-14 04:34:30,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:30,215 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2024-11-14 04:34:30,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 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 04:34:30,216 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-11-14 04:34:30,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 04:34:30,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:30,217 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:30,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:34:30,218 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:30,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:30,220 INFO L85 PathProgramCache]: Analyzing trace with hash -894232967, now seen corresponding path program 1 times [2024-11-14 04:34:30,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:34:30,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031181105] [2024-11-14 04:34:30,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:30,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:34:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:34:30,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521544930] [2024-11-14 04:34:30,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:30,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:34:30,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:34:30,286 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:34:30,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:34:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:30,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 04:34:30,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:34:30,563 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:34:30,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:34:30,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031181105] [2024-11-14 04:34:30,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:34:30,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521544930] [2024-11-14 04:34:30,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521544930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:34:30,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:34:30,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:34:30,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084317692] [2024-11-14 04:34:30,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:34:30,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:34:30,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:34:30,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:34:30,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:34:30,570 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 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 04:34:30,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:30,674 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2024-11-14 04:34:30,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:34:30,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 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 13 [2024-11-14 04:34:30,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:30,677 INFO L225 Difference]: With dead ends: 28 [2024-11-14 04:34:30,677 INFO L226 Difference]: Without dead ends: 24 [2024-11-14 04:34:30,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:34:30,679 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:34:30,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 50 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:34:30,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-14 04:34:30,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-14 04:34:30,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 04:34:30,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-14 04:34:30,692 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2024-11-14 04:34:30,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:30,692 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-14 04:34:30,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 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 04:34:30,693 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-14 04:34:30,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 04:34:30,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:30,695 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:30,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 04:34:30,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:34:30,900 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:30,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:30,904 INFO L85 PathProgramCache]: Analyzing trace with hash -891803703, now seen corresponding path program 1 times [2024-11-14 04:34:30,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:34:30,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343893568] [2024-11-14 04:34:30,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:30,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:34:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:34:31,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379844296] [2024-11-14 04:34:31,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:31,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:34:31,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:34:31,004 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:34:31,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:34:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:31,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 04:34:31,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:34:31,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:34:31,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:34:31,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:34:31,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343893568] [2024-11-14 04:34:31,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:34:31,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379844296] [2024-11-14 04:34:31,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379844296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:34:31,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [559067511] [2024-11-14 04:34:31,522 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:34:31,522 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:34:31,525 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:34:31,530 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:34:31,530 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:34:32,797 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 33 for LOIs [2024-11-14 04:34:32,863 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 55 for LOIs [2024-11-14 04:34:32,885 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:34:33,757 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '351#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_11| Int)) (and (not (= (+ (* (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11|) 5) (* (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11|) 2) (* 6 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11|))) (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_11| 12)))) (<= 0 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_11|) (<= 0 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11|))))' at error location [2024-11-14 04:34:33,757 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:34:33,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:34:33,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2024-11-14 04:34:33,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141931756] [2024-11-14 04:34:33,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:34:33,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 04:34:33,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:34:33,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 04:34:33,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-11-14 04:34:33,761 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 04:34:33,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:33,894 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2024-11-14 04:34:33,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 04:34:33,895 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 20 [2024-11-14 04:34:33,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:33,895 INFO L225 Difference]: With dead ends: 35 [2024-11-14 04:34:33,896 INFO L226 Difference]: Without dead ends: 31 [2024-11-14 04:34:33,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-11-14 04:34:33,897 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:34:33,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 63 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:34:33,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-14 04:34:33,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2024-11-14 04:34:33,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 04:34:33,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2024-11-14 04:34:33,910 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 20 [2024-11-14 04:34:33,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:33,911 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-11-14 04:34:33,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 04:34:33,911 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2024-11-14 04:34:33,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 04:34:33,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:33,912 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:33,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 04:34:34,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:34:34,117 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:34,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:34,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1574787184, now seen corresponding path program 1 times [2024-11-14 04:34:34,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:34:34,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733466471] [2024-11-14 04:34:34,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:34,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:34:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:34:34,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422094427] [2024-11-14 04:34:34,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:34,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:34:34,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:34:34,155 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:34:34,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:34:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:34,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 04:34:34,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 04:34:34,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:34:34,491 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 04:34:34,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:34:34,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733466471] [2024-11-14 04:34:34,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:34:34,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422094427] [2024-11-14 04:34:34,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422094427] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:34:34,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [10231856] [2024-11-14 04:34:34,494 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2024-11-14 04:34:34,495 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:34:34,495 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:34:34,495 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:34:34,495 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:34:35,177 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2024-11-14 04:34:35,184 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 55 for LOIs [2024-11-14 04:34:35,203 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:34:35,825 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '649#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-14 04:34:35,825 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:34:35,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:34:35,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-14 04:34:35,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284834188] [2024-11-14 04:34:35,825 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:34:35,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 04:34:35,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:34:35,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 04:34:35,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-11-14 04:34:35,827 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 7 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-14 04:34:35,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:35,990 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2024-11-14 04:34:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:34:35,990 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 7 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 31 [2024-11-14 04:34:35,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:35,991 INFO L225 Difference]: With dead ends: 43 [2024-11-14 04:34:35,991 INFO L226 Difference]: Without dead ends: 35 [2024-11-14 04:34:35,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2024-11-14 04:34:35,992 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:34:35,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 110 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:34:35,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-14 04:34:36,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-14 04:34:36,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 04:34:36,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2024-11-14 04:34:36,007 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 31 [2024-11-14 04:34:36,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:36,007 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2024-11-14 04:34:36,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 7 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-14 04:34:36,007 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2024-11-14 04:34:36,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 04:34:36,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:36,008 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:36,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-14 04:34:36,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:34:36,209 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:36,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:36,210 INFO L85 PathProgramCache]: Analyzing trace with hash -311128128, now seen corresponding path program 2 times [2024-11-14 04:34:36,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:34:36,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788293097] [2024-11-14 04:34:36,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:36,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:34:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:34:36,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831887595] [2024-11-14 04:34:36,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:34:36,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:34:36,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:34:36,291 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:34:36,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:34:36,376 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-14 04:34:36,376 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:34:36,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-14 04:34:36,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:36,689 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-14 04:34:36,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:34:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-14 04:34:37,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:34:37,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788293097] [2024-11-14 04:34:37,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:34:37,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831887595] [2024-11-14 04:34:37,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831887595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:34:37,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1592540091] [2024-11-14 04:34:37,078 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2024-11-14 04:34:37,078 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:34:37,078 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:34:37,078 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:34:37,078 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:34:37,617 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2024-11-14 04:34:37,624 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 55 for LOIs [2024-11-14 04:34:37,639 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:34:38,329 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1117#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-14 04:34:38,330 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:34:38,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:34:38,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2024-11-14 04:34:38,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649166244] [2024-11-14 04:34:38,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:34:38,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-14 04:34:38,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:34:38,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-14 04:34:38,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2024-11-14 04:34:38,335 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 20 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2024-11-14 04:34:39,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:39,089 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2024-11-14 04:34:39,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-14 04:34:39,090 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) Word has length 52 [2024-11-14 04:34:39,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:39,091 INFO L225 Difference]: With dead ends: 59 [2024-11-14 04:34:39,091 INFO L226 Difference]: Without dead ends: 51 [2024-11-14 04:34:39,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=209, Invalid=1431, Unknown=0, NotChecked=0, Total=1640 [2024-11-14 04:34:39,093 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 17 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:34:39,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 223 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:34:39,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-14 04:34:39,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2024-11-14 04:34:39,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 04:34:39,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-11-14 04:34:39,116 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 52 [2024-11-14 04:34:39,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:39,116 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-11-14 04:34:39,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2024-11-14 04:34:39,117 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-11-14 04:34:39,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-14 04:34:39,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:39,119 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:39,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 04:34:39,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:34:39,323 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:39,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:39,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2012483472, now seen corresponding path program 3 times [2024-11-14 04:34:39,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:34:39,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752952263] [2024-11-14 04:34:39,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:39,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:34:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:34:39,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367862422] [2024-11-14 04:34:39,383 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 04:34:39,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:34:39,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:34:39,388 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:34:39,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 04:34:39,465 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 04:34:39,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:34:39,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-14 04:34:39,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 22 proven. 135 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-14 04:34:39,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:34:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 22 proven. 135 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-14 04:34:40,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:34:40,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752952263] [2024-11-14 04:34:40,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:34:40,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367862422] [2024-11-14 04:34:40,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367862422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:34:40,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [211033454] [2024-11-14 04:34:40,428 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2024-11-14 04:34:40,428 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:34:40,428 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:34:40,428 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:34:40,429 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:34:40,824 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2024-11-14 04:34:40,830 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 55 for LOIs [2024-11-14 04:34:40,841 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:34:41,640 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1867#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-14 04:34:41,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:34:41,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:34:41,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2024-11-14 04:34:41,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140532623] [2024-11-14 04:34:41,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:34:41,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 04:34:41,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:34:41,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 04:34:41,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1160, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 04:34:41,643 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 26 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 23 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) [2024-11-14 04:34:42,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:42,493 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions. [2024-11-14 04:34:42,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-14 04:34:42,494 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 23 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) Word has length 87 [2024-11-14 04:34:42,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:42,495 INFO L225 Difference]: With dead ends: 55 [2024-11-14 04:34:42,495 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 04:34:42,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 222 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=315, Invalid=1941, Unknown=0, NotChecked=0, Total=2256 [2024-11-14 04:34:42,498 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 1 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:34:42,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 427 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:34:42,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 04:34:42,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 04:34:42,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:34:42,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 04:34:42,500 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2024-11-14 04:34:42,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:42,500 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 04:34:42,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 23 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) [2024-11-14 04:34:42,500 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 04:34:42,501 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 04:34:42,503 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 04:34:42,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 04:34:42,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:34:42,710 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-11-14 04:34:42,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 04:34:43,182 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 04:34:43,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:34:43 BoogieIcfgContainer [2024-11-14 04:34:43,209 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 04:34:43,210 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 04:34:43,210 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 04:34:43,210 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 04:34:43,211 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:34:29" (3/4) ... [2024-11-14 04:34:43,213 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 04:34:43,216 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-14 04:34:43,217 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-14 04:34:43,223 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-11-14 04:34:43,223 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-14 04:34:43,223 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-14 04:34:43,225 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 04:34:43,309 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 04:34:43,310 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 04:34:43,310 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 04:34:43,312 INFO L158 Benchmark]: Toolchain (without parser) took 14212.86ms. Allocated memory was 117.4MB in the beginning and 427.8MB in the end (delta: 310.4MB). Free memory was 94.1MB in the beginning and 338.7MB in the end (delta: -244.6MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. [2024-11-14 04:34:43,312 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 167.8MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:34:43,312 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.02ms. Allocated memory is still 117.4MB. Free memory was 94.1MB in the beginning and 83.0MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:34:43,313 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.74ms. Allocated memory is still 117.4MB. Free memory was 83.0MB in the beginning and 81.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:34:43,313 INFO L158 Benchmark]: Boogie Preprocessor took 33.22ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 81.1MB in the end (delta: 745.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:34:43,314 INFO L158 Benchmark]: RCFGBuilder took 357.51ms. Allocated memory is still 117.4MB. Free memory was 81.1MB in the beginning and 69.6MB in the end (delta: 11.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:34:43,314 INFO L158 Benchmark]: TraceAbstraction took 13432.35ms. Allocated memory was 117.4MB in the beginning and 427.8MB in the end (delta: 310.4MB). Free memory was 69.2MB in the beginning and 343.0MB in the end (delta: -273.8MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2024-11-14 04:34:43,314 INFO L158 Benchmark]: Witness Printer took 100.44ms. Allocated memory is still 427.8MB. Free memory was 343.0MB in the beginning and 338.7MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:34:43,316 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 167.8MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.02ms. Allocated memory is still 117.4MB. Free memory was 94.1MB in the beginning and 83.0MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.74ms. Allocated memory is still 117.4MB. Free memory was 83.0MB in the beginning and 81.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.22ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 81.1MB in the end (delta: 745.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 357.51ms. Allocated memory is still 117.4MB. Free memory was 81.1MB in the beginning and 69.6MB in the end (delta: 11.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 13432.35ms. Allocated memory was 117.4MB in the beginning and 427.8MB in the end (delta: 310.4MB). Free memory was 69.2MB in the beginning and 343.0MB in the end (delta: -273.8MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. * Witness Printer took 100.44ms. Allocated memory is still 427.8MB. Free memory was 343.0MB in the beginning and 338.7MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.9s, OverallIterations: 6, TraceHistogramMax: 12, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 892 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 760 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 641 IncrementalHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 132 mSDtfsCounter, 641 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 602 GetRequests, 466 SyntacticMatches, 5 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=5, InterpolantAutomatonStates: 60, 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 419 NumberOfCodeBlocks, 405 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 396 ConstructedInterpolants, 0 QuantifiedInterpolants, 1840 SizeOfPredicates, 8 NumberOfNonLiveVariables, 494 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 687/1028 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((0 <= k) && ((y + ((__int128) y * y)) == (c + ((__int128) c * y)))) && ((((__int128) 7 * c) + ((__int128) c * y)) == (((__int128) 7 * y) + ((__int128) y * y)))) && ((((6 * (((((__int128) y * y) * y) * y) * y)) + (2 * ((((((__int128) y * y) * y) * y) * y) * y))) + (5 * ((((__int128) y * y) * y) * y))) == (((__int128) x * 12) + ((__int128) y * y)))) && ((((__int128) k * y) == ((__int128) y * y)) || (c < k))) && (k <= 20)) - ProcedureContractResult [Line: 6]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-11-14 04:34:43,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc782fc-5907-4e5f-991e-95b5595d590b/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE