./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound20.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje --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 7e073a4c36b82f2b6062e496bb836cd3d16667ec7228f4ab2b6689e74fa81265 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:19:07,155 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:19:07,218 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 07:19:07,223 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:19:07,224 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:19:07,247 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:19:07,248 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:19:07,249 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:19:07,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:19:07,250 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:19:07,250 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:19:07,251 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:19:07,251 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:19:07,252 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:19:07,252 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:19:07,253 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:19:07,253 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:19:07,254 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:19:07,254 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:19:07,255 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:19:07,255 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:19:07,256 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:19:07,256 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:19:07,257 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:19:07,257 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:19:07,257 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:19:07,258 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:19:07,258 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:19:07,259 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:19:07,259 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:19:07,259 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:19:07,260 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:19:07,260 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:19:07,261 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:19:07,261 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:19:07,262 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:19:07,262 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:19:07,262 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:19:07,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:19:07,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:19:07,263 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:19:07,264 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:19:07,264 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:19:07,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:19:07,265 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:19:07,265 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:19:07,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:19:07,266 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e073a4c36b82f2b6062e496bb836cd3d16667ec7228f4ab2b6689e74fa81265 [2024-11-09 07:19:07,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:19:07,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:19:07,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:19:07,524 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:19:07,524 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:19:07,526 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound20.i Unable to find full path for "g++" [2024-11-09 07:19:09,478 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:19:09,718 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:19:09,719 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound20.i [2024-11-09 07:19:09,727 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/data/81131b538/433dd238133c4d50b1d5a0d2d0589303/FLAGf5e51c20d [2024-11-09 07:19:09,743 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/data/81131b538/433dd238133c4d50b1d5a0d2d0589303 [2024-11-09 07:19:09,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:19:09,751 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:19:09,753 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:19:09,753 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:19:09,758 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:19:09,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:19:09" (1/1) ... [2024-11-09 07:19:09,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dfbdbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:19:09, skipping insertion in model container [2024-11-09 07:19:09,761 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:19:09" (1/1) ... [2024-11-09 07:19:09,781 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:19:09,972 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_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound20.i[950,963] [2024-11-09 07:19:09,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:19:10,000 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:19:10,014 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_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound20.i[950,963] [2024-11-09 07:19:10,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:19:10,034 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:19:10,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:19:10 WrapperNode [2024-11-09 07:19:10,035 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:19:10,036 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:19:10,036 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:19:10,036 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:19:10,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:19:10" (1/1) ... [2024-11-09 07:19:10,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:19:10" (1/1) ... [2024-11-09 07:19:10,062 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2024-11-09 07:19:10,062 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:19:10,063 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:19:10,063 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:19:10,063 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:19:10,072 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:19:10" (1/1) ... [2024-11-09 07:19:10,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:19:10" (1/1) ... [2024-11-09 07:19:10,074 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:19:10" (1/1) ... [2024-11-09 07:19:10,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:19:10" (1/1) ... [2024-11-09 07:19:10,077 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:19:10" (1/1) ... [2024-11-09 07:19:10,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:19:10" (1/1) ... [2024-11-09 07:19:10,082 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:19:10" (1/1) ... [2024-11-09 07:19:10,083 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:19:10" (1/1) ... [2024-11-09 07:19:10,084 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:19:10,085 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:19:10,085 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:19:10,086 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:19:10,086 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:19:10" (1/1) ... [2024-11-09 07:19:10,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:19:10,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:19:10,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:19:10,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:19:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:19:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 07:19:10,148 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 07:19:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:19:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:19:10,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:19:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 07:19:10,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 07:19:10,207 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:19:10,208 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:19:10,354 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-09 07:19:10,355 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:19:10,403 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:19:10,403 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 07:19:10,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:19:10 BoogieIcfgContainer [2024-11-09 07:19:10,404 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:19:10,407 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:19:10,407 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:19:10,410 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:19:10,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:19:09" (1/3) ... [2024-11-09 07:19:10,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@146ad3cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:19:10, skipping insertion in model container [2024-11-09 07:19:10,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:19:10" (2/3) ... [2024-11-09 07:19:10,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@146ad3cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:19:10, skipping insertion in model container [2024-11-09 07:19:10,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:19:10" (3/3) ... [2024-11-09 07:19:10,414 INFO L112 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound20.i [2024-11-09 07:19:10,433 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:19:10,433 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:19:10,495 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:19:10,501 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;@259979a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:19:10,502 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:19:10,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 07:19:10,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 07:19:10,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:10,514 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:10,515 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:19:10,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:10,521 INFO L85 PathProgramCache]: Analyzing trace with hash -603666885, now seen corresponding path program 1 times [2024-11-09 07:19:10,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:10,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298381165] [2024-11-09 07:19:10,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:10,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:19:10,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:10,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298381165] [2024-11-09 07:19:10,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298381165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:19:10,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:19:10,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:19:10,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214341042] [2024-11-09 07:19:10,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:19:10,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 07:19:10,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:10,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 07:19:10,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 07:19:10,771 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-09 07:19:10,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:10,821 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2024-11-09 07:19:10,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 07:19:10,828 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 14 [2024-11-09 07:19:10,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:10,841 INFO L225 Difference]: With dead ends: 35 [2024-11-09 07:19:10,843 INFO L226 Difference]: Without dead ends: 20 [2024-11-09 07:19:10,846 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 [2024-11-09 07:19:10,850 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:10,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:19:10,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-09 07:19:10,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-09 07:19:10,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:19:10,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2024-11-09 07:19:10,897 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 14 [2024-11-09 07:19:10,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:10,900 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-11-09 07:19:10,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-09 07:19:10,902 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2024-11-09 07:19:10,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 07:19:10,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:10,904 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:10,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:19:10,905 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:19:10,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:10,907 INFO L85 PathProgramCache]: Analyzing trace with hash 434172618, now seen corresponding path program 1 times [2024-11-09 07:19:10,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:10,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766425939] [2024-11-09 07:19:10,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:10,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:19:11,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:11,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766425939] [2024-11-09 07:19:11,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766425939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:19:11,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:19:11,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:19:11,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999890092] [2024-11-09 07:19:11,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:19:11,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:19:11,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:11,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:19:11,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:19:11,134 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-11-09 07:19:11,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:11,168 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-11-09 07:19:11,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:19:11,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 16 [2024-11-09 07:19:11,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:11,170 INFO L225 Difference]: With dead ends: 33 [2024-11-09 07:19:11,170 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 07:19:11,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:19:11,172 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:11,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 53 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:19:11,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 07:19:11,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-09 07:19:11,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:19:11,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-09 07:19:11,180 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 16 [2024-11-09 07:19:11,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:11,181 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-09 07:19:11,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-11-09 07:19:11,181 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-09 07:19:11,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 07:19:11,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:11,183 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:11,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 07:19:11,183 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:19:11,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:11,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1125294893, now seen corresponding path program 1 times [2024-11-09 07:19:11,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:11,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337357158] [2024-11-09 07:19:11,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:11,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:11,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:19:11,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:11,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337357158] [2024-11-09 07:19:11,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337357158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:19:11,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:19:11,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:19:11,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712603099] [2024-11-09 07:19:11,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:19:11,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:19:11,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:11,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:19:11,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:19:11,372 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2024-11-09 07:19:11,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:11,429 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2024-11-09 07:19:11,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:19:11,430 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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 17 [2024-11-09 07:19:11,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:11,431 INFO L225 Difference]: With dead ends: 33 [2024-11-09 07:19:11,431 INFO L226 Difference]: Without dead ends: 26 [2024-11-09 07:19:11,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:19:11,433 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:11,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 54 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:19:11,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-09 07:19:11,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-09 07:19:11,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:19:11,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2024-11-09 07:19:11,446 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 17 [2024-11-09 07:19:11,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:11,446 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2024-11-09 07:19:11,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2024-11-09 07:19:11,447 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2024-11-09 07:19:11,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 07:19:11,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:11,450 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:11,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:19:11,450 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:19:11,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:11,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1127082353, now seen corresponding path program 1 times [2024-11-09 07:19:11,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:11,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075513401] [2024-11-09 07:19:11,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:11,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:19:11,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167858579] [2024-11-09 07:19:11,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:11,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:11,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:19:11,515 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:19:11,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:19:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:11,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 07:19:11,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:19:11,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:19:11,905 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:19:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:19:12,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:12,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075513401] [2024-11-09 07:19:12,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:19:12,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167858579] [2024-11-09 07:19:12,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167858579] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 07:19:12,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:19:12,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2024-11-09 07:19:12,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364109535] [2024-11-09 07:19:12,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:19:12,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:19:12,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:12,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:19:12,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 07:19:12,252 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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) [2024-11-09 07:19:12,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:12,754 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2024-11-09 07:19:12,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:19:12,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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 17 [2024-11-09 07:19:12,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:12,757 INFO L225 Difference]: With dead ends: 34 [2024-11-09 07:19:12,757 INFO L226 Difference]: Without dead ends: 31 [2024-11-09 07:19:12,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-09 07:19:12,759 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:12,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 65 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:19:12,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-09 07:19:12,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-09 07:19:12,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 23 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 07:19:12,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2024-11-09 07:19:12,769 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 17 [2024-11-09 07:19:12,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:12,770 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2024-11-09 07:19:12,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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) [2024-11-09 07:19:12,770 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2024-11-09 07:19:12,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 07:19:12,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:12,771 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:12,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 07:19:12,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:12,977 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:19:12,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:12,977 INFO L85 PathProgramCache]: Analyzing trace with hash -866960942, now seen corresponding path program 1 times [2024-11-09 07:19:12,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:12,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860331342] [2024-11-09 07:19:12,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:12,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:13,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:19:13,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:13,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860331342] [2024-11-09 07:19:13,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860331342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:19:13,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651941228] [2024-11-09 07:19:13,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:13,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:13,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:19:13,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:19:13,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:19:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:13,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:19:13,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:19:13,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:19:13,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:19:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:19:13,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651941228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:19:13,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1227264649] [2024-11-09 07:19:13,352 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2024-11-09 07:19:13,353 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:19:13,356 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:19:13,362 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:19:13,363 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:19:13,977 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 23 for LOIs [2024-11-09 07:19:13,998 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2024-11-09 07:19:13,999 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:19:14,857 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '609#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~A~0#1_BEFORE_CALL_2| Int)) (not (= (mod |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| 4294967296) (mod |v_ULTIMATE.start_main_~A~0#1_BEFORE_CALL_2| 4294967296)))) (= |__VERIFIER_assert_#in~cond| 0) (<= 21 ~counter~0))' at error location [2024-11-09 07:19:14,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:19:14,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:19:14,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 10 [2024-11-09 07:19:14,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143007883] [2024-11-09 07:19:14,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:19:14,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:19:14,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:14,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:19:14,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-09 07:19:14,861 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 07:19:14,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:14,966 INFO L93 Difference]: Finished difference Result 62 states and 77 transitions. [2024-11-09 07:19:14,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 07:19:14,967 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 19 [2024-11-09 07:19:14,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:14,968 INFO L225 Difference]: With dead ends: 62 [2024-11-09 07:19:14,968 INFO L226 Difference]: Without dead ends: 51 [2024-11-09 07:19:14,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2024-11-09 07:19:14,969 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 34 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:14,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 93 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:19:14,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-09 07:19:14,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2024-11-09 07:19:14,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 31 states have internal predecessors, (38), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 07:19:14,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2024-11-09 07:19:14,978 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 19 [2024-11-09 07:19:14,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:14,979 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2024-11-09 07:19:14,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 07:19:14,979 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2024-11-09 07:19:14,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 07:19:14,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:14,980 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:15,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 07:19:15,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:15,181 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:19:15,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:15,182 INFO L85 PathProgramCache]: Analyzing trace with hash -555139803, now seen corresponding path program 1 times [2024-11-09 07:19:15,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:15,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393540527] [2024-11-09 07:19:15,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:15,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:15,294 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:19:15,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:15,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393540527] [2024-11-09 07:19:15,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393540527] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:19:15,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839181734] [2024-11-09 07:19:15,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:15,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:15,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:19:15,297 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:19:15,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 07:19:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:15,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 07:19:15,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:19:15,381 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:19:15,381 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:19:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:19:15,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839181734] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:19:15,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [899936912] [2024-11-09 07:19:15,461 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2024-11-09 07:19:15,461 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:19:15,461 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:19:15,463 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:19:15,463 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:19:15,844 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 27 for LOIs [2024-11-09 07:19:15,866 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2024-11-09 07:19:15,868 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:19:16,781 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '900#(and (exists ((|v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~A~0#1_BEFORE_CALL_3| Int)) (and (<= (+ (mod |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| 4294967296) 1) (mod |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_3| 4294967296)) (not (= (mod |v_ULTIMATE.start_main_~A~0#1_BEFORE_CALL_3| 4294967296) (mod |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| 4294967296))))) (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (<= 21 ~counter~0))' at error location [2024-11-09 07:19:16,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:19:16,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:19:16,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 12 [2024-11-09 07:19:16,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843022401] [2024-11-09 07:19:16,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:19:16,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 07:19:16,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:16,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 07:19:16,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2024-11-09 07:19:16,783 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 07:19:16,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:16,975 INFO L93 Difference]: Finished difference Result 86 states and 103 transitions. [2024-11-09 07:19:16,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 07:19:16,975 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 20 [2024-11-09 07:19:16,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:16,977 INFO L225 Difference]: With dead ends: 86 [2024-11-09 07:19:16,977 INFO L226 Difference]: Without dead ends: 79 [2024-11-09 07:19:16,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2024-11-09 07:19:16,979 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 57 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:16,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 116 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:19:16,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-09 07:19:16,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2024-11-09 07:19:16,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 58 states have internal predecessors, (71), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 07:19:16,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2024-11-09 07:19:16,990 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 20 [2024-11-09 07:19:16,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:16,990 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2024-11-09 07:19:16,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 07:19:16,991 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2024-11-09 07:19:16,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 07:19:16,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:16,991 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:17,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 07:19:17,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:17,196 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:19:17,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:17,197 INFO L85 PathProgramCache]: Analyzing trace with hash -553352343, now seen corresponding path program 1 times [2024-11-09 07:19:17,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:17,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983040812] [2024-11-09 07:19:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:17,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:19:17,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [910844934] [2024-11-09 07:19:17,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:17,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:17,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:19:17,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:19:17,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 07:19:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:17,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 07:19:17,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:19:17,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 07:19:17,369 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:19:17,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:17,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983040812] [2024-11-09 07:19:17,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:19:17,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910844934] [2024-11-09 07:19:17,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910844934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:19:17,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:19:17,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:19:17,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023968388] [2024-11-09 07:19:17,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:19:17,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:19:17,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:17,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:19:17,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:19:17,372 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-09 07:19:17,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:17,437 INFO L93 Difference]: Finished difference Result 112 states and 137 transitions. [2024-11-09 07:19:17,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:19:17,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 20 [2024-11-09 07:19:17,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:17,442 INFO L225 Difference]: With dead ends: 112 [2024-11-09 07:19:17,442 INFO L226 Difference]: Without dead ends: 106 [2024-11-09 07:19:17,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:19:17,444 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:17,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 63 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:19:17,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-09 07:19:17,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2024-11-09 07:19:17,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 75 states have (on average 1.2) internal successors, (90), 79 states have internal predecessors, (90), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-09 07:19:17,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2024-11-09 07:19:17,470 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 20 [2024-11-09 07:19:17,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:17,470 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2024-11-09 07:19:17,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-09 07:19:17,473 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2024-11-09 07:19:17,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 07:19:17,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:17,474 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:17,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 07:19:17,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 07:19:17,675 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:19:17,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1185359216, now seen corresponding path program 1 times [2024-11-09 07:19:17,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:17,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924003124] [2024-11-09 07:19:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:17,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:17,960 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:19:17,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:17,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924003124] [2024-11-09 07:19:17,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924003124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:19:17,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:19:17,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:19:17,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941955699] [2024-11-09 07:19:17,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:19:17,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:19:17,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:17,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:19:17,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:19:17,962 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 07:19:17,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:17,994 INFO L93 Difference]: Finished difference Result 132 states and 153 transitions. [2024-11-09 07:19:17,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:19:17,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2024-11-09 07:19:17,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:17,996 INFO L225 Difference]: With dead ends: 132 [2024-11-09 07:19:17,996 INFO L226 Difference]: Without dead ends: 84 [2024-11-09 07:19:17,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:19:17,997 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:17,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:19:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-09 07:19:18,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-09 07:19:18,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 66 states have internal predecessors, (75), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 07:19:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2024-11-09 07:19:18,009 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 25 [2024-11-09 07:19:18,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:18,009 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2024-11-09 07:19:18,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 07:19:18,010 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2024-11-09 07:19:18,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 07:19:18,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:18,011 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:18,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 07:19:18,011 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:19:18,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:18,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1479410552, now seen corresponding path program 1 times [2024-11-09 07:19:18,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:18,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123968859] [2024-11-09 07:19:18,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:18,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:19:18,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209282406] [2024-11-09 07:19:18,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:18,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:18,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:19:18,042 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:19:18,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 07:19:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:18,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 07:19:18,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:19:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:19:18,934 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:19:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:19:26,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:26,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123968859] [2024-11-09 07:19:26,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:19:26,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209282406] [2024-11-09 07:19:26,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209282406] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:19:26,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1004176863] [2024-11-09 07:19:26,250 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2024-11-09 07:19:26,250 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:19:26,251 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:19:26,251 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:19:26,251 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:19:27,466 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 21 for LOIs [2024-11-09 07:19:27,486 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2024-11-09 07:19:27,488 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:19:32,285 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2043#(and (= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_16| Int) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_16| Int) (|v_ULTIMATE.start_main_~A~0#1_BEFORE_CALL_16| Int) (|v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_16| Int)) (not (= (mod (+ (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_16| |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_16|) |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_16|) 4294967296) (mod |v_ULTIMATE.start_main_~A~0#1_BEFORE_CALL_16| 4294967296)))))' at error location [2024-11-09 07:19:32,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:19:32,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:19:32,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 18 [2024-11-09 07:19:32,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163310185] [2024-11-09 07:19:32,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:19:32,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 07:19:32,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:32,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 07:19:32,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=822, Unknown=1, NotChecked=0, Total=930 [2024-11-09 07:19:32,288 INFO L87 Difference]: Start difference. First operand 84 states and 96 transitions. Second operand has 18 states, 16 states have (on average 2.1875) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 07:19:35,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:19:39,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:19:43,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:43,483 INFO L93 Difference]: Finished difference Result 108 states and 123 transitions. [2024-11-09 07:19:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 07:19:43,484 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 28 [2024-11-09 07:19:43,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:43,487 INFO L225 Difference]: With dead ends: 108 [2024-11-09 07:19:43,488 INFO L226 Difference]: Without dead ends: 102 [2024-11-09 07:19:43,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=202, Invalid=1436, Unknown=2, NotChecked=0, Total=1640 [2024-11-09 07:19:43,493 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 95 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 28 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:43,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 195 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 177 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2024-11-09 07:19:43,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-09 07:19:43,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2024-11-09 07:19:43,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 74 states have (on average 1.1081081081081081) internal successors, (82), 79 states have internal predecessors, (82), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (12), 8 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-09 07:19:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2024-11-09 07:19:43,531 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 28 [2024-11-09 07:19:43,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:43,531 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2024-11-09 07:19:43,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 07:19:43,532 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2024-11-09 07:19:43,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 07:19:43,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:43,534 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:43,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 07:19:43,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:43,738 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:19:43,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:43,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1604327769, now seen corresponding path program 2 times [2024-11-09 07:19:43,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:43,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489668624] [2024-11-09 07:19:43,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:43,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:44,310 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:19:44,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:44,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489668624] [2024-11-09 07:19:44,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489668624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:19:44,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561317417] [2024-11-09 07:19:44,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:19:44,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:44,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:19:44,312 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:19:44,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 07:19:44,739 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 07:19:44,740 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:19:44,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 07:19:44,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:19:45,149 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:19:45,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:19:45,490 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:19:45,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561317417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:19:45,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [751926149] [2024-11-09 07:19:45,493 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2024-11-09 07:19:45,493 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:19:45,494 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:19:45,494 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:19:45,494 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:19:46,390 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 21 for LOIs [2024-11-09 07:19:46,406 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2024-11-09 07:19:46,408 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:19:48,115 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2614#(and (exists ((|v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_29| Int) (|v_ULTIMATE.start_main_~A~0#1_BEFORE_CALL_25| Int) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_25| Int) (|v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_25| Int)) (not (= (mod (+ (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_29| |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_25|) |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_25|) 4294967296) (mod |v_ULTIMATE.start_main_~A~0#1_BEFORE_CALL_25| 4294967296)))) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-09 07:19:48,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:19:48,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:19:48,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 6] total 16 [2024-11-09 07:19:48,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355692231] [2024-11-09 07:19:48,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:19:48,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 07:19:48,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:48,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 07:19:48,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2024-11-09 07:19:48,118 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 16 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 8 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-09 07:19:48,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:48,315 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2024-11-09 07:19:48,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:19:48,316 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 8 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) Word has length 36 [2024-11-09 07:19:48,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:48,316 INFO L225 Difference]: With dead ends: 112 [2024-11-09 07:19:48,316 INFO L226 Difference]: Without dead ends: 75 [2024-11-09 07:19:48,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2024-11-09 07:19:48,318 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 23 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:48,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 176 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:19:48,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-09 07:19:48,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-09 07:19:48,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 57 states have (on average 1.105263157894737) internal successors, (63), 61 states have internal predecessors, (63), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 07:19:48,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2024-11-09 07:19:48,337 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 36 [2024-11-09 07:19:48,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:48,338 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2024-11-09 07:19:48,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 8 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-09 07:19:48,338 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2024-11-09 07:19:48,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 07:19:48,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:48,340 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:48,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 07:19:48,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:48,540 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:19:48,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:48,541 INFO L85 PathProgramCache]: Analyzing trace with hash -424330007, now seen corresponding path program 1 times [2024-11-09 07:19:48,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:48,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329620702] [2024-11-09 07:19:48,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:48,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:48,764 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 07:19:48,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:48,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329620702] [2024-11-09 07:19:48,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329620702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:19:48,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353936547] [2024-11-09 07:19:48,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:48,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:48,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:19:48,770 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:19:48,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 07:19:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:48,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 07:19:48,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:19:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:19:48,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:19:49,089 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 07:19:49,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353936547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:19:49,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1816877127] [2024-11-09 07:19:49,092 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-09 07:19:49,093 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:19:49,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:19:49,093 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:19:49,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:19:49,528 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2024-11-09 07:19:49,538 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2024-11-09 07:19:49,543 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:19:50,267 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3133#(= |__VERIFIER_assert_#in~cond| 0)' at error location [2024-11-09 07:19:50,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:19:50,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:19:50,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 16 [2024-11-09 07:19:50,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216352287] [2024-11-09 07:19:50,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:19:50,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 07:19:50,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:50,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 07:19:50,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2024-11-09 07:19:50,270 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-09 07:19:50,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:50,656 INFO L93 Difference]: Finished difference Result 215 states and 237 transitions. [2024-11-09 07:19:50,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 07:19:50,656 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 36 [2024-11-09 07:19:50,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:50,658 INFO L225 Difference]: With dead ends: 215 [2024-11-09 07:19:50,658 INFO L226 Difference]: Without dead ends: 197 [2024-11-09 07:19:50,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=300, Invalid=1260, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 07:19:50,659 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 78 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:50,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 113 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:19:50,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-09 07:19:50,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 92. [2024-11-09 07:19:50,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 74 states have (on average 1.1486486486486487) internal successors, (85), 78 states have internal predecessors, (85), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 07:19:50,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2024-11-09 07:19:50,687 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 36 [2024-11-09 07:19:50,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:50,688 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2024-11-09 07:19:50,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-09 07:19:50,688 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2024-11-09 07:19:50,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 07:19:50,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:50,689 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:50,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 07:19:50,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:50,894 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:19:50,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:50,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1991268783, now seen corresponding path program 3 times [2024-11-09 07:19:50,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:50,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747780890] [2024-11-09 07:19:50,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:50,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:19:51,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1501511333] [2024-11-09 07:19:51,162 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:19:51,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:51,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:19:51,168 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:19:51,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 07:19:51,944 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:19:51,944 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:19:51,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 07:19:51,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:19:53,841 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:19:53,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:05,472 WARN L286 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 40 DAG size of output: 37 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:20:50,217 WARN L286 SmtUtils]: Spent 7.22s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:21:06,384 WARN L286 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:21:30,068 WARN L286 SmtUtils]: Spent 5.61s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:21:41,236 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:21:41,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:41,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747780890] [2024-11-09 07:21:41,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:21:41,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501511333] [2024-11-09 07:21:41,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501511333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:41,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1005920715] [2024-11-09 07:21:41,239 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2024-11-09 07:21:41,239 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:21:41,239 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:21:41,239 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:21:41,239 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:21:42,007 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 21 for LOIs [2024-11-09 07:21:42,021 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2024-11-09 07:21:42,022 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:21:55,644 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3873#(and (exists ((|v_ULTIMATE.start_main_~A~0#1_BEFORE_CALL_47| Int) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_47| Int) (|v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_47| Int) (|v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_51| Int)) (not (= (mod (+ (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_51| |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_47|) |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_47|) 4294967296) (mod |v_ULTIMATE.start_main_~A~0#1_BEFORE_CALL_47| 4294967296)))) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-09 07:21:55,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:21:55,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:21:55,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 25 [2024-11-09 07:21:55,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324597195] [2024-11-09 07:21:55,645 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:21:55,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 07:21:55,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:21:55,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 07:21:55,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1174, Unknown=4, NotChecked=0, Total=1332 [2024-11-09 07:21:55,647 INFO L87 Difference]: Start difference. First operand 92 states and 104 transitions. Second operand has 25 states, 23 states have (on average 2.130434782608696) internal successors, (49), 20 states have internal predecessors, (49), 8 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 07:21:58,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:43,227 WARN L286 SmtUtils]: Spent 39.66s on a formula simplification. DAG size of input: 73 DAG size of output: 71 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:22:45,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:48,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:49,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:23:20,664 WARN L286 SmtUtils]: Spent 29.61s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:23:52,285 WARN L286 SmtUtils]: Spent 27.56s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:23:54,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:23:56,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:23:58,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:24:05,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:24:07,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:25:05,516 WARN L286 SmtUtils]: Spent 55.89s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:25:07,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:25:08,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:25:14,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:25:22,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:25:24,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:26:02,339 WARN L286 SmtUtils]: Spent 32.92s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:26:04,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:26:38,744 WARN L286 SmtUtils]: Spent 24.62s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:26:42,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:26:45,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:26:52,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:26:54,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:27:29,021 WARN L286 SmtUtils]: Spent 32.46s on a formula simplification. DAG size of input: 74 DAG size of output: 73 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:27:31,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:27:31,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:27:31,657 INFO L93 Difference]: Finished difference Result 127 states and 143 transitions. [2024-11-09 07:27:31,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 07:27:31,661 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.130434782608696) internal successors, (49), 20 states have internal predecessors, (49), 8 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 39 [2024-11-09 07:27:31,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:27:31,662 INFO L225 Difference]: With dead ends: 127 [2024-11-09 07:27:31,663 INFO L226 Difference]: Without dead ends: 123 [2024-11-09 07:27:31,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 79 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 335.3s TimeCoverageRelationStatistics Valid=333, Invalid=2007, Unknown=12, NotChecked=0, Total=2352 [2024-11-09 07:27:31,665 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 101 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 38 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:27:31,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 270 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 213 Invalid, 18 Unknown, 0 Unchecked, 55.0s Time] [2024-11-09 07:27:31,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-09 07:27:31,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 105. [2024-11-09 07:27:31,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 83 states have (on average 1.1325301204819278) internal successors, (94), 88 states have internal predecessors, (94), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 8 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-09 07:27:31,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2024-11-09 07:27:31,747 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 39 [2024-11-09 07:27:31,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:27:31,747 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2024-11-09 07:27:31,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.130434782608696) internal successors, (49), 20 states have internal predecessors, (49), 8 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 07:27:31,748 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2024-11-09 07:27:31,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 07:27:31,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:27:31,750 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:27:31,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 07:27:31,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:27:31,955 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:27:31,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:27:31,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1181335170, now seen corresponding path program 1 times [2024-11-09 07:27:31,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:27:31,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286706119] [2024-11-09 07:27:31,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:27:31,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:27:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:27:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 07:27:32,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:27:32,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286706119] [2024-11-09 07:27:32,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286706119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:27:32,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94261749] [2024-11-09 07:27:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:27:32,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:27:32,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:27:32,416 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:27:32,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 07:27:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:27:32,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 07:27:32,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:27:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:27:32,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:27:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 07:27:33,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94261749] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:27:33,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [325427203] [2024-11-09 07:27:33,105 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-09 07:27:33,106 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:27:33,106 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:27:33,106 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:27:33,107 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:27:34,065 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2024-11-09 07:27:34,074 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2024-11-09 07:27:34,076 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:27:35,705 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4570#(= |__VERIFIER_assert_#in~cond| 0)' at error location [2024-11-09 07:27:35,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:27:35,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:27:35,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 22 [2024-11-09 07:27:35,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383064797] [2024-11-09 07:27:35,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:27:35,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 07:27:35,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:27:35,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 07:27:35,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=943, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 07:27:35,709 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 22 states have internal predecessors, (71), 10 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-09 07:27:36,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:27:36,925 INFO L93 Difference]: Finished difference Result 460 states and 496 transitions. [2024-11-09 07:27:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 07:27:36,926 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 22 states have internal predecessors, (71), 10 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) Word has length 50 [2024-11-09 07:27:36,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:27:36,931 INFO L225 Difference]: With dead ends: 460 [2024-11-09 07:27:36,931 INFO L226 Difference]: Without dead ends: 453 [2024-11-09 07:27:36,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=502, Invalid=1754, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 07:27:36,934 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 174 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:27:36,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 190 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:27:36,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2024-11-09 07:27:37,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 415. [2024-11-09 07:27:37,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 316 states have (on average 1.0886075949367089) internal successors, (344), 334 states have internal predecessors, (344), 53 states have call successors, (53), 45 states have call predecessors, (53), 45 states have return successors, (52), 35 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-09 07:27:37,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 449 transitions. [2024-11-09 07:27:37,115 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 449 transitions. Word has length 50 [2024-11-09 07:27:37,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:27:37,116 INFO L471 AbstractCegarLoop]: Abstraction has 415 states and 449 transitions. [2024-11-09 07:27:37,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 22 states have internal predecessors, (71), 10 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-09 07:27:37,116 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 449 transitions. [2024-11-09 07:27:37,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 07:27:37,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:27:37,119 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:27:37,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 07:27:37,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:27:37,320 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:27:37,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:27:37,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1183122630, now seen corresponding path program 4 times [2024-11-09 07:27:37,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:27:37,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295860094] [2024-11-09 07:27:37,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:27:37,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:28:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:28:15,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267201145] [2024-11-09 07:28:15,087 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 07:28:15,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:28:15,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:28:15,090 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:28:15,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44c1385-e5d8-4a03-a01f-76c6b74c8a50/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 07:29:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:29:02,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-09 07:29:02,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:29:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 47 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 07:29:30,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:30:38,165 WARN L286 SmtUtils]: Spent 12.04s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:30:54,620 WARN L286 SmtUtils]: Spent 10.06s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:32:46,217 WARN L286 SmtUtils]: Spent 1.63m on a formula simplification. DAG size of input: 103 DAG size of output: 101 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:33:03,879 WARN L286 SmtUtils]: Spent 9.62s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:33:23,865 WARN L286 SmtUtils]: Spent 7.00s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:33:33,268 WARN L286 SmtUtils]: Spent 6.58s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:33:50,598 WARN L286 SmtUtils]: Spent 12.05s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:33:58,950 WARN L286 SmtUtils]: Spent 6.26s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)