./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+newton_3_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_3_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c562931a6d05e325b28cce00e946abdf58c2b9fa526927c821e1aeeb79c8db9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:41:59,929 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:42:00,026 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:42:00,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:42:00,036 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:42:00,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:42:00,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:42:00,080 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:42:00,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:42:00,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:42:00,082 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:42:00,082 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:42:00,082 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:42:00,082 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:42:00,082 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:42:00,083 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:42:00,083 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:42:00,083 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:42:00,083 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:42:00,083 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:42:00,084 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:42:00,084 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:42:00,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:42:00,085 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:42:00,085 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:42:00,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:42:00,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:42:00,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:42:00,085 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:42:00,085 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:42:00,086 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:42:00,086 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:42:00,086 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:42:00,086 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:42:00,086 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:42:00,086 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:42:00,087 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:42:00,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:42:00,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:42:00,088 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:42:00,088 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:42:00,088 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:42:00,088 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:42:00,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:42:00,088 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:42:00,088 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:42:00,088 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:42:00,089 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c562931a6d05e325b28cce00e946abdf58c2b9fa526927c821e1aeeb79c8db9 [2024-11-14 03:42:00,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:42:00,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:42:00,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:42:00,444 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:42:00,444 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:42:00,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/combinations/gcd_4+newton_3_5.i Unable to find full path for "g++" [2024-11-14 03:42:02,374 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:42:02,723 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:42:02,724 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i [2024-11-14 03:42:02,734 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/data/910fc2765/d4b09df8d1174becb5451ebcb3d7f547/FLAG5301c4116 [2024-11-14 03:42:02,750 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/data/910fc2765/d4b09df8d1174becb5451ebcb3d7f547 [2024-11-14 03:42:02,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:42:02,754 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:42:02,756 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:42:02,756 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:42:02,761 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:42:02,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:42:02" (1/1) ... [2024-11-14 03:42:02,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc16fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:02, skipping insertion in model container [2024-11-14 03:42:02,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:42:02" (1/1) ... [2024-11-14 03:42:02,779 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:42:02,965 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_a6514cf7-7612-400e-abdd-19db52c054ca/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[1224,1237] [2024-11-14 03:42:03,008 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_a6514cf7-7612-400e-abdd-19db52c054ca/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[2848,2861] [2024-11-14 03:42:03,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:42:03,026 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:42:03,043 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_a6514cf7-7612-400e-abdd-19db52c054ca/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[1224,1237] [2024-11-14 03:42:03,065 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_a6514cf7-7612-400e-abdd-19db52c054ca/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[2848,2861] [2024-11-14 03:42:03,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:42:03,087 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:42:03,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:03 WrapperNode [2024-11-14 03:42:03,088 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:42:03,089 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:42:03,089 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:42:03,089 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:42:03,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:03" (1/1) ... [2024-11-14 03:42:03,109 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:03" (1/1) ... [2024-11-14 03:42:03,139 INFO L138 Inliner]: procedures = 27, calls = 28, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 83 [2024-11-14 03:42:03,139 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:42:03,141 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:42:03,141 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:42:03,141 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:42:03,150 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:03" (1/1) ... [2024-11-14 03:42:03,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:03" (1/1) ... [2024-11-14 03:42:03,153 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:03" (1/1) ... [2024-11-14 03:42:03,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:03" (1/1) ... [2024-11-14 03:42:03,162 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:03" (1/1) ... [2024-11-14 03:42:03,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:03" (1/1) ... [2024-11-14 03:42:03,174 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:03" (1/1) ... [2024-11-14 03:42:03,175 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:03" (1/1) ... [2024-11-14 03:42:03,177 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:42:03,182 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:42:03,182 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:42:03,182 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:42:03,183 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:03" (1/1) ... [2024-11-14 03:42:03,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:42:03,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:42:03,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:42:03,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:42:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:42:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-14 03:42:03,258 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-14 03:42:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-14 03:42:03,259 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-14 03:42:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:42:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:42:03,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:42:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 03:42:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 03:42:03,335 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:42:03,336 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:42:03,633 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-11-14 03:42:03,633 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:42:03,730 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:42:03,731 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 03:42:03,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:42:03 BoogieIcfgContainer [2024-11-14 03:42:03,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:42:03,734 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:42:03,734 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:42:03,746 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:42:03,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:42:02" (1/3) ... [2024-11-14 03:42:03,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707bc71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:42:03, skipping insertion in model container [2024-11-14 03:42:03,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:03" (2/3) ... [2024-11-14 03:42:03,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707bc71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:42:03, skipping insertion in model container [2024-11-14 03:42:03,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:42:03" (3/3) ... [2024-11-14 03:42:03,750 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_3_5.i [2024-11-14 03:42:03,767 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:42:03,770 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_4+newton_3_5.i that has 4 procedures, 34 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-14 03:42:03,843 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:42:03,857 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;@6cdf17c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:42:03,858 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-14 03:42:03,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 19 states have (on average 1.368421052631579) internal successors, (26), 21 states have internal predecessors, (26), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 03:42:03,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 03:42:03,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:42:03,872 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:42:03,873 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:42:03,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:42:03,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1562687401, now seen corresponding path program 1 times [2024-11-14 03:42:03,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:42:03,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954552054] [2024-11-14 03:42:03,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:42:03,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:42:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:42:04,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:42:04,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:42:04,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954552054] [2024-11-14 03:42:04,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954552054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:42:04,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:42:04,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:42:04,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687086079] [2024-11-14 03:42:04,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:42:04,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:42:04,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:42:04,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:42:04,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:42:04,198 INFO L87 Difference]: Start difference. First operand has 34 states, 19 states have (on average 1.368421052631579) internal successors, (26), 21 states have internal predecessors, (26), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:42:04,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:42:04,271 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2024-11-14 03:42:04,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:42:04,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-14 03:42:04,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:42:04,279 INFO L225 Difference]: With dead ends: 49 [2024-11-14 03:42:04,279 INFO L226 Difference]: Without dead ends: 31 [2024-11-14 03:42:04,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:42:04,285 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:42:04,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 59 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:42:04,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-14 03:42:04,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2024-11-14 03:42:04,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 03:42:04,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-14 03:42:04,336 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 8 [2024-11-14 03:42:04,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:42:04,336 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-14 03:42:04,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:42:04,337 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-14 03:42:04,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 03:42:04,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:42:04,338 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:42:04,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:42:04,338 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:42:04,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:42:04,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1304220369, now seen corresponding path program 1 times [2024-11-14 03:42:04,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:42:04,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779776441] [2024-11-14 03:42:04,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:42:04,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:42:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:42:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:42:04,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:42:04,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779776441] [2024-11-14 03:42:04,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779776441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:42:04,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:42:04,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:42:04,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608401912] [2024-11-14 03:42:04,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:42:04,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:42:04,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:42:04,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:42:04,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:42:04,484 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:42:04,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:42:04,520 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2024-11-14 03:42:04,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:42:04,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-14 03:42:04,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:42:04,522 INFO L225 Difference]: With dead ends: 41 [2024-11-14 03:42:04,522 INFO L226 Difference]: Without dead ends: 31 [2024-11-14 03:42:04,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:42:04,524 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:42:04,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:42:04,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-14 03:42:04,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-14 03:42:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 03:42:04,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2024-11-14 03:42:04,536 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 9 [2024-11-14 03:42:04,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:42:04,536 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2024-11-14 03:42:04,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:42:04,536 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2024-11-14 03:42:04,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 03:42:04,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:42:04,537 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:42:04,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:42:04,537 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:42:04,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:42:04,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1240684428, now seen corresponding path program 1 times [2024-11-14 03:42:04,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:42:04,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188758052] [2024-11-14 03:42:04,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:42:04,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:42:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:42:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:42:04,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:42:04,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188758052] [2024-11-14 03:42:04,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188758052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:42:04,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109158723] [2024-11-14 03:42:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:42:04,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:42:04,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:42:04,758 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:42:04,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:42:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:42:04,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 03:42:04,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:42:04,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:42:04,932 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:42:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:42:05,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109158723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:42:05,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1474333977] [2024-11-14 03:42:05,035 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-14 03:42:05,035 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:42:05,042 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:42:05,048 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:42:05,048 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:42:05,741 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 48 for LOIs [2024-11-14 03:42:05,837 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:42:06,477 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '335#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_1| Int)) (and (not (= (mod 63 |v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_1|) 0)) (<= 0 (+ |v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_1| 2147483648)) (<= |v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_1| 2147483647))))' at error location [2024-11-14 03:42:06,478 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:42:06,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:42:06,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-14 03:42:06,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613642660] [2024-11-14 03:42:06,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:42:06,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:42:06,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:42:06,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:42:06,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-14 03:42:06,483 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:42:06,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:42:06,571 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2024-11-14 03:42:06,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:42:06,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-14 03:42:06,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:42:06,574 INFO L225 Difference]: With dead ends: 43 [2024-11-14 03:42:06,574 INFO L226 Difference]: Without dead ends: 33 [2024-11-14 03:42:06,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-11-14 03:42:06,575 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:42:06,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:42:06,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-14 03:42:06,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-14 03:42:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 03:42:06,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2024-11-14 03:42:06,586 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 10 [2024-11-14 03:42:06,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:42:06,586 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2024-11-14 03:42:06,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:42:06,586 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2024-11-14 03:42:06,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 03:42:06,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:42:06,587 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:42:06,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:42:06,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:42:06,789 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:42:06,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:42:06,789 INFO L85 PathProgramCache]: Analyzing trace with hash 345473004, now seen corresponding path program 2 times [2024-11-14 03:42:06,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:42:06,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231599198] [2024-11-14 03:42:06,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:42:06,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:42:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:42:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:42:07,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:42:07,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231599198] [2024-11-14 03:42:07,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231599198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:42:07,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261594977] [2024-11-14 03:42:07,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:42:07,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:42:07,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:42:07,151 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:42:07,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:42:07,219 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 03:42:07,219 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:42:07,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 03:42:07,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:42:07,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:42:07,304 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:42:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:42:07,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261594977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:42:07,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1176015305] [2024-11-14 03:42:07,636 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-14 03:42:07,637 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:42:07,637 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:42:07,637 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:42:07,637 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:42:07,941 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2024-11-14 03:42:07,988 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:42:08,546 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '545#(and (exists ((|v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_2| Int)) (and (<= |v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_2| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_2| 2147483648)) (not (= (mod 63 |v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_2|) 0)))) (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-14 03:42:08,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:42:08,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:42:08,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-14 03:42:08,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658577711] [2024-11-14 03:42:08,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:42:08,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 03:42:08,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:42:08,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 03:42:08,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2024-11-14 03:42:08,548 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:42:08,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:42:08,652 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2024-11-14 03:42:08,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:42:08,653 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-14 03:42:08,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:42:08,654 INFO L225 Difference]: With dead ends: 44 [2024-11-14 03:42:08,656 INFO L226 Difference]: Without dead ends: 34 [2024-11-14 03:42:08,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2024-11-14 03:42:08,657 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:42:08,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:42:08,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-14 03:42:08,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-14 03:42:08,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 03:42:08,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2024-11-14 03:42:08,669 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 12 [2024-11-14 03:42:08,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:42:08,669 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2024-11-14 03:42:08,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:42:08,669 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2024-11-14 03:42:08,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 03:42:08,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:42:08,670 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:42:08,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 03:42:08,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:42:08,875 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:42:08,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:42:08,875 INFO L85 PathProgramCache]: Analyzing trace with hash 841571439, now seen corresponding path program 3 times [2024-11-14 03:42:08,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:42:08,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935075904] [2024-11-14 03:42:08,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:42:08,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:42:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:42:09,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:42:09,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:42:09,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935075904] [2024-11-14 03:42:09,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935075904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:42:09,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123132220] [2024-11-14 03:42:09,218 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 03:42:09,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:42:09,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:42:09,222 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:42:09,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:42:09,295 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 03:42:09,296 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:42:09,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 03:42:09,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:42:09,400 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:42:09,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:42:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:42:09,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123132220] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:42:09,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [778398759] [2024-11-14 03:42:09,909 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-14 03:42:09,913 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:42:09,913 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:42:09,913 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:42:09,914 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:42:10,119 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2024-11-14 03:42:10,153 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:42:10,732 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '766#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_3| Int)) (and (<= |v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_3| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_3| 2147483648)) (not (= (mod 63 |v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_3|) 0)))))' at error location [2024-11-14 03:42:10,732 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:42:10,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:42:10,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-14 03:42:10,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964647423] [2024-11-14 03:42:10,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:42:10,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 03:42:10,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:42:10,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 03:42:10,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2024-11-14 03:42:10,736 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:42:11,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:42:11,054 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2024-11-14 03:42:11,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 03:42:11,055 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-14 03:42:11,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:42:11,056 INFO L225 Difference]: With dead ends: 49 [2024-11-14 03:42:11,056 INFO L226 Difference]: Without dead ends: 39 [2024-11-14 03:42:11,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=157, Invalid=655, Unknown=0, NotChecked=0, Total=812 [2024-11-14 03:42:11,057 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:42:11,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 271 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:42:11,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-14 03:42:11,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-14 03:42:11,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.16) internal successors, (29), 27 states have internal predecessors, (29), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 03:42:11,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2024-11-14 03:42:11,064 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 13 [2024-11-14 03:42:11,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:42:11,064 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2024-11-14 03:42:11,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:42:11,064 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2024-11-14 03:42:11,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 03:42:11,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:42:11,065 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:42:11,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-14 03:42:11,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:42:11,270 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:42:11,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:42:11,270 INFO L85 PathProgramCache]: Analyzing trace with hash -959246260, now seen corresponding path program 4 times [2024-11-14 03:42:11,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:42:11,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008162292] [2024-11-14 03:42:11,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:42:11,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:42:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:42:11,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221323922] [2024-11-14 03:42:11,298 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 03:42:11,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:42:11,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:42:11,303 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:42:11,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:42:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:42:11,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 03:42:11,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:42:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:42:11,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:42:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:42:27,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:42:27,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008162292] [2024-11-14 03:42:27,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 03:42:27,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221323922] [2024-11-14 03:42:27,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221323922] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:42:27,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1450693243] [2024-11-14 03:42:27,297 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-14 03:42:27,299 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:42:27,299 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:42:27,299 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:42:27,299 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:42:27,444 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2024-11-14 03:42:27,465 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:42:28,084 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1026#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_5| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_5| 2147483648)) (<= |v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_5| 2147483647) (not (= (mod 63 |v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_5|) 0)))) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-14 03:42:28,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:42:28,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:42:28,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2024-11-14 03:42:28,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144625691] [2024-11-14 03:42:28,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:42:28,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-14 03:42:28,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:42:28,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-14 03:42:28,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2024-11-14 03:42:28,086 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 22 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:42:28,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:42:28,484 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2024-11-14 03:42:28,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 03:42:28,484 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-14 03:42:28,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:42:28,485 INFO L225 Difference]: With dead ends: 53 [2024-11-14 03:42:28,485 INFO L226 Difference]: Without dead ends: 36 [2024-11-14 03:42:28,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2024-11-14 03:42:28,487 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:42:28,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 253 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:42:28,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-14 03:42:28,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-14 03:42:28,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 24 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 03:42:28,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2024-11-14 03:42:28,493 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 14 [2024-11-14 03:42:28,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:42:28,493 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2024-11-14 03:42:28,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:42:28,493 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2024-11-14 03:42:28,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 03:42:28,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:42:28,494 INFO L215 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:42:28,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 03:42:28,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-14 03:42:28,695 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:42:28,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:42:28,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1792237802, now seen corresponding path program 1 times [2024-11-14 03:42:28,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:42:28,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144196503] [2024-11-14 03:42:28,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:42:28,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:42:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:42:28,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [323269870] [2024-11-14 03:42:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:42:28,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:42:28,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:42:28,725 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:42:28,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 03:42:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:42:28,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 03:42:28,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:42:28,966 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:42:28,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:42:40,688 WARN L286 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 136 DAG size of output: 136 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:42:43,173 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:42:43,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:42:43,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144196503] [2024-11-14 03:42:43,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 03:42:43,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323269870] [2024-11-14 03:42:43,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323269870] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:42:43,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2022130580] [2024-11-14 03:42:43,175 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 03:42:43,175 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:42:43,176 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:42:43,176 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:42:43,176 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:42:43,470 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 73 for LOIs [2024-11-14 03:42:43,592 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:42:45,018 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1307#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (or (exists ((|v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_12| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_12| 2147483648)) (not (= (mod 63 |v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_12|) 0)) (<= |v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_12| 2147483647))) (exists ((|v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_11| Int)) (and (not (= (mod 18 |v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_11|) 0)) (or (exists ((|v___VERIFIER_assert_#in~cond_AFTER_CALL_8| Int)) (and (= (mod 63 |v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_11|) 0) (= |v___VERIFIER_assert_#in~cond_AFTER_CALL_8| 1))) (exists ((|v___VERIFIER_assert_#in~cond_AFTER_CALL_7| Int)) (and (= (mod 63 |v_ULTIMATE.start_main1_~g~0#1_BEFORE_CALL_11|) 0) (= |v___VERIFIER_assert_#in~cond_AFTER_CALL_7| 1))))))))' at error location [2024-11-14 03:42:45,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:42:45,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:42:45,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2024-11-14 03:42:45,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785849295] [2024-11-14 03:42:45,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:42:45,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-14 03:42:45,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:42:45,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-14 03:42:45,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=814, Unknown=2, NotChecked=0, Total=930 [2024-11-14 03:42:45,020 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 22 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:42:45,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:42:45,279 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-11-14 03:42:45,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 03:42:45,279 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-14 03:42:45,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:42:45,280 INFO L225 Difference]: With dead ends: 36 [2024-11-14 03:42:45,280 INFO L226 Difference]: Without dead ends: 18 [2024-11-14 03:42:45,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=120, Invalid=870, Unknown=2, NotChecked=0, Total=992 [2024-11-14 03:42:45,284 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:42:45,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 327 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:42:45,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-14 03:42:45,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-14 03:42:45,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 03:42:45,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-11-14 03:42:45,292 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 19 [2024-11-14 03:42:45,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:42:45,292 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-11-14 03:42:45,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:42:45,292 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-14 03:42:45,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 03:42:45,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:42:45,293 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:42:45,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 03:42:45,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:42:45,494 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:42:45,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:42:45,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1817903574, now seen corresponding path program 1 times [2024-11-14 03:42:45,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:42:45,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168472940] [2024-11-14 03:42:45,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:42:45,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:42:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 03:42:45,505 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 03:42:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 03:42:45,527 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 03:42:45,527 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 03:42:45,528 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-14 03:42:45,530 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-14 03:42:45,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 03:42:45,533 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2024-11-14 03:42:45,550 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 03:42:45,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 03:42:45 BoogieIcfgContainer [2024-11-14 03:42:45,553 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 03:42:45,554 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 03:42:45,554 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 03:42:45,555 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 03:42:45,555 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:42:03" (3/4) ... [2024-11-14 03:42:45,557 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-14 03:42:45,558 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 03:42:45,559 INFO L158 Benchmark]: Toolchain (without parser) took 42805.00ms. Allocated memory was 117.4MB in the beginning and 184.5MB in the end (delta: 67.1MB). Free memory was 94.5MB in the beginning and 63.5MB in the end (delta: 31.0MB). Peak memory consumption was 98.8MB. Max. memory is 16.1GB. [2024-11-14 03:42:45,559 INFO L158 Benchmark]: CDTParser took 0.54ms. Allocated memory is still 142.6MB. Free memory is still 80.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:42:45,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.37ms. Allocated memory is still 117.4MB. Free memory was 94.5MB in the beginning and 82.5MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:42:45,560 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.19ms. Allocated memory is still 117.4MB. Free memory was 82.5MB in the beginning and 81.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:42:45,560 INFO L158 Benchmark]: Boogie Preprocessor took 40.49ms. Allocated memory is still 117.4MB. Free memory was 81.1MB in the beginning and 80.1MB in the end (delta: 1.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:42:45,561 INFO L158 Benchmark]: RCFGBuilder took 549.58ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 62.7MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 03:42:45,561 INFO L158 Benchmark]: TraceAbstraction took 41819.70ms. Allocated memory was 117.4MB in the beginning and 184.5MB in the end (delta: 67.1MB). Free memory was 62.1MB in the beginning and 65.5MB in the end (delta: -3.4MB). Peak memory consumption was 56.8MB. Max. memory is 16.1GB. [2024-11-14 03:42:45,561 INFO L158 Benchmark]: Witness Printer took 4.25ms. Allocated memory is still 184.5MB. Free memory was 65.5MB in the beginning and 63.5MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:42:45,563 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54ms. Allocated memory is still 142.6MB. Free memory is still 80.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.37ms. Allocated memory is still 117.4MB. Free memory was 94.5MB in the beginning and 82.5MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.19ms. Allocated memory is still 117.4MB. Free memory was 82.5MB in the beginning and 81.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.49ms. Allocated memory is still 117.4MB. Free memory was 81.1MB in the beginning and 80.1MB in the end (delta: 1.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 549.58ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 62.7MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 41819.70ms. Allocated memory was 117.4MB in the beginning and 184.5MB in the end (delta: 67.1MB). Free memory was 62.1MB in the beginning and 65.5MB in the end (delta: -3.4MB). Peak memory consumption was 56.8MB. Max. memory is 16.1GB. * Witness Printer took 4.25ms. Allocated memory is still 184.5MB. Free memory was 65.5MB in the beginning and 63.5MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 109]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 92, overapproximation of someBinaryArithmeticFLOAToperation at line 100, overapproximation of someBinaryArithmeticFLOAToperation at line 104, overapproximation of someBinaryArithmeticFLOAToperation at line 87, overapproximation of someBinaryArithmeticFLOAToperation at line 102. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L82] COND FALSE !(!cond) [L98] RET assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L100] CALL, EXPR f(IN) VAL [\old(x)=109] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L100] RET, EXPR f(IN) VAL [IN=109] [L100] CALL, EXPR fp(IN) VAL [\old(x)=109] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L100] RET, EXPR fp(IN) VAL [IN=109] [L100] float x = IN - f(IN)/fp(IN); [L102] CALL, EXPR f(x) VAL [\old(x)=110] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L102] RET, EXPR f(x) VAL [IN=109, x=110] [L102] CALL, EXPR fp(x) VAL [\old(x)=110] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L102] RET, EXPR fp(x) VAL [IN=109, x=110] [L102] x = x - f(x)/fp(x) [L104] CALL, EXPR f(x) VAL [\old(x)=111] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L104] RET, EXPR f(x) VAL [IN=109, x=111] [L104] CALL, EXPR fp(x) VAL [\old(x)=111] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L104] RET, EXPR fp(x) VAL [IN=109, x=111] [L104] x = x - f(x)/fp(x) [L108] COND TRUE !(x < 0.1) VAL [IN=109] [L109] reach_error() VAL [IN=109] - UnprovableResult [Line: 27]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 41.7s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 1184 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 994 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 575 IncrementalHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 190 mSDtfsCounter, 575 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 20.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=5, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 32.6s InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 3105 SizeOfPredicates, 13 NumberOfNonLiveVariables, 365 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 15 InterpolantComputations, 2 PerfectInterpolantSequences, 4/115 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-14 03:42:45,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_3_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c562931a6d05e325b28cce00e946abdf58c2b9fa526927c821e1aeeb79c8db9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:42:48,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:42:48,295 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-14 03:42:48,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:42:48,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:42:48,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:42:48,342 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:42:48,342 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:42:48,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:42:48,343 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:42:48,344 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:42:48,344 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:42:48,345 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:42:48,345 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:42:48,345 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:42:48,345 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:42:48,345 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:42:48,345 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:42:48,346 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:42:48,346 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:42:48,346 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:42:48,346 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:42:48,346 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:42:48,346 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:42:48,346 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 03:42:48,346 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 03:42:48,346 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:42:48,346 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 03:42:48,346 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:42:48,346 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:42:48,346 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:42:48,347 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:42:48,347 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 03:42:48,347 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:42:48,347 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:42:48,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:42:48,347 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:42:48,347 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:42:48,347 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:42:48,347 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 03:42:48,347 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 03:42:48,347 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:42:48,347 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:42:48,348 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c562931a6d05e325b28cce00e946abdf58c2b9fa526927c821e1aeeb79c8db9 [2024-11-14 03:42:48,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:42:48,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:42:48,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:42:48,653 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:42:48,654 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:42:48,655 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/combinations/gcd_4+newton_3_5.i Unable to find full path for "g++" [2024-11-14 03:42:50,682 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:42:50,893 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:42:50,894 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i [2024-11-14 03:42:50,903 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/data/512affb2c/ab7cfbf8974a4bed8311293ad313390b/FLAG9af122f02 [2024-11-14 03:42:51,242 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/data/512affb2c/ab7cfbf8974a4bed8311293ad313390b [2024-11-14 03:42:51,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:42:51,246 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:42:51,249 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:42:51,249 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:42:51,253 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:42:51,255 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:42:51" (1/1) ... [2024-11-14 03:42:51,256 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f091f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:51, skipping insertion in model container [2024-11-14 03:42:51,258 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:42:51" (1/1) ... [2024-11-14 03:42:51,278 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:42:51,418 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[1224,1237] [2024-11-14 03:42:51,451 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_a6514cf7-7612-400e-abdd-19db52c054ca/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[2848,2861] [2024-11-14 03:42:51,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:42:51,472 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:42:51,485 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_a6514cf7-7612-400e-abdd-19db52c054ca/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[1224,1237] [2024-11-14 03:42:51,497 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_a6514cf7-7612-400e-abdd-19db52c054ca/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[2848,2861] [2024-11-14 03:42:51,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:42:51,516 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:42:51,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:51 WrapperNode [2024-11-14 03:42:51,517 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:42:51,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:42:51,518 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:42:51,519 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:42:51,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:51" (1/1) ... [2024-11-14 03:42:51,535 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:51" (1/1) ... [2024-11-14 03:42:51,558 INFO L138 Inliner]: procedures = 28, calls = 28, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 80 [2024-11-14 03:42:51,559 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:42:51,559 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:42:51,560 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:42:51,560 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:42:51,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:51" (1/1) ... [2024-11-14 03:42:51,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:51" (1/1) ... [2024-11-14 03:42:51,572 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:51" (1/1) ... [2024-11-14 03:42:51,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:51" (1/1) ... [2024-11-14 03:42:51,587 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:51" (1/1) ... [2024-11-14 03:42:51,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:51" (1/1) ... [2024-11-14 03:42:51,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:51" (1/1) ... [2024-11-14 03:42:51,604 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:51" (1/1) ... [2024-11-14 03:42:51,606 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:42:51,607 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:42:51,611 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:42:51,611 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:42:51,612 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:51" (1/1) ... [2024-11-14 03:42:51,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:42:51,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:42:51,655 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:42:51,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:42:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:42:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 03:42:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-14 03:42:51,689 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-14 03:42:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-14 03:42:51,689 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-14 03:42:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:42:51,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:42:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 03:42:51,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 03:42:51,788 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:42:51,790 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:43:00,114 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-14 03:43:00,115 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:43:00,133 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:43:00,133 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 03:43:00,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:43:00 BoogieIcfgContainer [2024-11-14 03:43:00,134 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:43:00,137 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:43:00,137 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:43:00,143 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:43:00,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:42:51" (1/3) ... [2024-11-14 03:43:00,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d32b12b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:43:00, skipping insertion in model container [2024-11-14 03:43:00,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:42:51" (2/3) ... [2024-11-14 03:43:00,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d32b12b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:43:00, skipping insertion in model container [2024-11-14 03:43:00,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:43:00" (3/3) ... [2024-11-14 03:43:00,146 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_3_5.i [2024-11-14 03:43:00,162 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:43:00,163 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_4+newton_3_5.i that has 4 procedures, 46 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-14 03:43:00,213 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:43:00,225 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;@62d2f296, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:43:00,225 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-14 03:43:00,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 33 states have internal predecessors, (43), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 03:43:00,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 03:43:00,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:43:00,237 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:43:00,237 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:43:00,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:43:00,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1781341513, now seen corresponding path program 1 times [2024-11-14 03:43:00,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:43:00,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025824447] [2024-11-14 03:43:00,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:43:00,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:43:00,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:43:00,257 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:43:00,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-14 03:43:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:43:00,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:43:00,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:43:00,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:43:00,537 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:43:00,538 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:43:00,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025824447] [2024-11-14 03:43:00,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025824447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:43:00,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:43:00,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:43:00,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354751346] [2024-11-14 03:43:00,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:43:00,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:43:00,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:43:00,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:43:00,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:43:00,563 INFO L87 Difference]: Start difference. First operand has 46 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 33 states have internal predecessors, (43), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:43:00,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:43:00,687 INFO L93 Difference]: Finished difference Result 90 states and 123 transitions. [2024-11-14 03:43:00,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:43:00,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-14 03:43:00,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:43:00,695 INFO L225 Difference]: With dead ends: 90 [2024-11-14 03:43:00,696 INFO L226 Difference]: Without dead ends: 42 [2024-11-14 03:43:00,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:43:00,704 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 7 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:43:00,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 96 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:43:00,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-14 03:43:00,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2024-11-14 03:43:00,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 03:43:00,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2024-11-14 03:43:00,750 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 11 [2024-11-14 03:43:00,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:43:00,751 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2024-11-14 03:43:00,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:43:00,751 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2024-11-14 03:43:00,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 03:43:00,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:43:00,753 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:43:00,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-14 03:43:00,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:43:00,958 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:43:00,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:43:00,958 INFO L85 PathProgramCache]: Analyzing trace with hash -503368345, now seen corresponding path program 1 times [2024-11-14 03:43:00,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:43:00,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782052614] [2024-11-14 03:43:00,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:43:00,959 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:43:00,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:43:00,961 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:43:00,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-14 03:43:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:43:01,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:43:01,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:43:01,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:43:01,121 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:43:01,122 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:43:01,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782052614] [2024-11-14 03:43:01,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782052614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:43:01,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:43:01,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:43:01,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424273296] [2024-11-14 03:43:01,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:43:01,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:43:01,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:43:01,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:43:01,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:43:01,125 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:43:01,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:43:01,231 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions. [2024-11-14 03:43:01,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:43:01,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-14 03:43:01,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:43:01,233 INFO L225 Difference]: With dead ends: 55 [2024-11-14 03:43:01,233 INFO L226 Difference]: Without dead ends: 41 [2024-11-14 03:43:01,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:43:01,235 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 4 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:43:01,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 79 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:43:01,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-14 03:43:01,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-14 03:43:01,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 29 states have internal predecessors, (32), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 03:43:01,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-11-14 03:43:01,244 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 13 [2024-11-14 03:43:01,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:43:01,245 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-11-14 03:43:01,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:43:01,245 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-11-14 03:43:01,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 03:43:01,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:43:01,246 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:43:01,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-14 03:43:01,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:43:01,447 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:43:01,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:43:01,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1727578948, now seen corresponding path program 1 times [2024-11-14 03:43:01,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:43:01,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505104640] [2024-11-14 03:43:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:43:01,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:43:01,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:43:01,451 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:43:01,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-14 03:43:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:43:01,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:43:01,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:43:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:43:01,858 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:43:01,858 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:43:01,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505104640] [2024-11-14 03:43:01,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505104640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:43:01,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:43:01,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:43:01,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986432883] [2024-11-14 03:43:01,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:43:01,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:43:01,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:43:01,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:43:01,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:43:01,860 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:43:01,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:43:01,976 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2024-11-14 03:43:01,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:43:01,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-14 03:43:01,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:43:01,978 INFO L225 Difference]: With dead ends: 56 [2024-11-14 03:43:01,978 INFO L226 Difference]: Without dead ends: 43 [2024-11-14 03:43:01,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:43:01,980 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:43:01,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:43:01,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-14 03:43:01,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-14 03:43:01,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 03:43:01,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2024-11-14 03:43:01,989 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 15 [2024-11-14 03:43:01,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:43:01,989 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2024-11-14 03:43:01,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:43:01,990 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2024-11-14 03:43:01,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 03:43:01,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:43:01,990 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:43:01,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-14 03:43:02,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:43:02,192 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:43:02,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:43:02,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2123758047, now seen corresponding path program 1 times [2024-11-14 03:43:02,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:43:02,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907660828] [2024-11-14 03:43:02,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:43:02,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:43:02,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:43:02,198 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:43:02,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-14 03:43:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:43:02,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 03:43:02,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:43:02,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:43:02,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:43:02,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:43:02,945 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:43:02,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907660828] [2024-11-14 03:43:02,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907660828] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:43:02,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [974412787] [2024-11-14 03:43:02,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:43:02,946 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:43:02,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:43:02,953 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:43:02,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-14 03:43:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:43:03,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 03:43:03,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:43:03,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:43:03,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:43:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:43:03,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [974412787] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:43:03,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760831216] [2024-11-14 03:43:03,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:43:03,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:43:03,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:43:03,569 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:43:03,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 03:43:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:43:03,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 03:43:03,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:43:04,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:43:04,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:43:04,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:43:04,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760831216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:43:04,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:43:04,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 5, 5] total 10 [2024-11-14 03:43:04,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121976742] [2024-11-14 03:43:04,482 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:43:04,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 03:43:04,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:43:04,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 03:43:04,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-14 03:43:04,483 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:43:05,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:43:05,191 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2024-11-14 03:43:05,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:43:05,192 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-14 03:43:05,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:43:05,193 INFO L225 Difference]: With dead ends: 63 [2024-11-14 03:43:05,194 INFO L226 Difference]: Without dead ends: 50 [2024-11-14 03:43:05,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-14 03:43:05,196 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:43:05,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 222 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:43:05,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-14 03:43:05,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2024-11-14 03:43:05,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 36 states have internal predecessors, (39), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 03:43:05,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2024-11-14 03:43:05,214 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 17 [2024-11-14 03:43:05,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:43:05,214 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2024-11-14 03:43:05,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:43:05,214 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2024-11-14 03:43:05,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 03:43:05,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:43:05,219 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:43:05,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-14 03:43:05,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 03:43:05,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-11-14 03:43:05,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:43:05,820 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:43:05,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:43:05,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1267107016, now seen corresponding path program 2 times [2024-11-14 03:43:05,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:43:05,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087538221] [2024-11-14 03:43:05,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:43:05,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:43:05,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:43:05,826 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:43:05,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-14 03:43:05,918 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:43:05,918 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:43:05,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 03:43:05,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:43:07,836 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:43:07,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:43:14,501 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:43:14,501 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:43:14,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087538221] [2024-11-14 03:43:14,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087538221] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:43:14,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1253145449] [2024-11-14 03:43:14,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:43:14,502 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:43:14,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:43:14,504 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:43:14,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-14 03:43:14,704 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:43:14,704 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:43:14,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 03:43:14,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:43:16,284 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:43:16,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:43:18,396 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:43:18,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1253145449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:43:18,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715253508] [2024-11-14 03:43:18,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:43:18,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:43:18,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:43:18,399 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:43:18,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 03:43:18,479 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:43:18,479 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:43:18,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:43:18,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:43:19,593 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:43:19,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:43:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:43:23,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715253508] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:43:23,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:43:23,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 6, 6, 8, 8] total 36 [2024-11-14 03:43:23,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123978907] [2024-11-14 03:43:23,382 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:43:23,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-14 03:43:23,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:43:23,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-14 03:43:23,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2024-11-14 03:43:23,387 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 36 states, 34 states have (on average 2.676470588235294) internal successors, (91), 34 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:43:37,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:43:37,451 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2024-11-14 03:43:37,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 03:43:37,457 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.676470588235294) internal successors, (91), 34 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 03:43:37,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:43:37,458 INFO L225 Difference]: With dead ends: 75 [2024-11-14 03:43:37,458 INFO L226 Difference]: Without dead ends: 61 [2024-11-14 03:43:37,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=195, Invalid=1287, Unknown=0, NotChecked=0, Total=1482 [2024-11-14 03:43:37,460 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-14 03:43:37,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 793 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-14 03:43:37,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-14 03:43:37,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2024-11-14 03:43:37,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 46 states have internal predecessors, (49), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 03:43:37,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2024-11-14 03:43:37,472 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 23 [2024-11-14 03:43:37,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:43:37,473 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2024-11-14 03:43:37,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.676470588235294) internal successors, (91), 34 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:43:37,473 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2024-11-14 03:43:37,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 03:43:37,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:43:37,474 INFO L215 NwaCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:43:37,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-11-14 03:43:37,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-14 03:43:37,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 03:43:38,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:43:38,076 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:43:38,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:43:38,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1165001134, now seen corresponding path program 3 times [2024-11-14 03:43:38,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:43:38,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119450943] [2024-11-14 03:43:38,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:43:38,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:43:38,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:43:38,078 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:43:38,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-14 03:43:38,175 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-14 03:43:38,175 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:43:38,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:43:38,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:43:39,151 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:43:39,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:43:41,414 WARN L851 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_gcd_test_~b#1| (_ BitVec 32))) (not (= (_ bv0 32) (bvadd (bvneg (bvadd |c_ULTIMATE.start_gcd_test_~a#1| (bvneg |ULTIMATE.start_gcd_test_~b#1|))) |ULTIMATE.start_gcd_test_~b#1|)))) is different from false [2024-11-14 03:43:45,089 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_gcd_test_~b#1_43| (_ BitVec 32))) (not (= (bvadd (bvneg (bvadd (bvneg |v_ULTIMATE.start_gcd_test_~b#1_43|) |c_ULTIMATE.start_gcd_test_~a#1| (bvmul (bvneg |c_ULTIMATE.start_gcd_test_~b#1|) (_ bv2 32)))) |v_ULTIMATE.start_gcd_test_~b#1_43|) (_ bv0 32)))) is different from false [2024-11-14 03:43:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 7 refuted. 2 times theorem prover too weak. 6 trivial. 34 not checked. [2024-11-14 03:43:51,766 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:43:51,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119450943] [2024-11-14 03:43:51,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119450943] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:43:51,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [786810049] [2024-11-14 03:43:51,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:43:51,767 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:43:51,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:43:51,772 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:43:51,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-14 03:43:52,418 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-14 03:43:52,418 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:43:52,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:43:52,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:43:52,830 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:43:52,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:43:53,534 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 7 refuted. 2 times theorem prover too weak. 6 trivial. 34 not checked. [2024-11-14 03:43:53,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [786810049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:43:53,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377516902] [2024-11-14 03:43:53,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:43:53,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:43:53,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:43:53,537 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:43:53,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 03:43:53,644 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-14 03:43:53,644 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:43:53,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 03:43:53,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:43:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:43:54,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:43:56,983 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 7 refuted. 2 times theorem prover too weak. 6 trivial. 34 not checked. [2024-11-14 03:43:56,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377516902] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:43:56,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:43:56,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 15 [2024-11-14 03:43:56,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551171047] [2024-11-14 03:43:56,984 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:43:56,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 03:43:56,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:43:56,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 03:43:56,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=113, Unknown=5, NotChecked=46, Total=210 [2024-11-14 03:43:56,986 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:44:01,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 03:44:05,951 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_gcd_test_~b#1_43| (_ BitVec 32))) (not (= (bvadd (bvneg (bvadd (bvneg |v_ULTIMATE.start_gcd_test_~b#1_43|) |c_ULTIMATE.start_gcd_test_~a#1| (bvmul (bvneg |c_ULTIMATE.start_gcd_test_~b#1|) (_ bv2 32)))) |v_ULTIMATE.start_gcd_test_~b#1_43|) (_ bv0 32)))) (not (= (_ bv0 32) |c_ULTIMATE.start_gcd_test_~b#1|)) (forall ((|ULTIMATE.start_gcd_test_~b#1| (_ BitVec 32))) (not (= (_ bv0 32) (bvadd (bvneg (bvadd |c_ULTIMATE.start_gcd_test_~a#1| (bvneg |ULTIMATE.start_gcd_test_~b#1|))) |ULTIMATE.start_gcd_test_~b#1|))))) is different from false [2024-11-14 03:44:08,010 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_gcd_test_~b#1_43| (_ BitVec 32))) (not (= (bvadd (bvneg (bvadd (bvneg |v_ULTIMATE.start_gcd_test_~b#1_43|) |c_ULTIMATE.start_gcd_test_~a#1| (bvmul (bvneg |c_ULTIMATE.start_gcd_test_~b#1|) (_ bv2 32)))) |v_ULTIMATE.start_gcd_test_~b#1_43|) (_ bv0 32)))) (forall ((|ULTIMATE.start_gcd_test_~b#1| (_ BitVec 32))) (not (= (_ bv0 32) (bvadd (bvneg (bvadd |c_ULTIMATE.start_gcd_test_~a#1| (bvneg |ULTIMATE.start_gcd_test_~b#1|))) |ULTIMATE.start_gcd_test_~b#1|))))) is different from false [2024-11-14 03:44:15,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-14 03:44:25,531 WARN L851 $PredicateComparison]: unable to prove that (and (not (= (_ bv0 32) |c_ULTIMATE.start_gcd_test_~b#1|)) (forall ((|ULTIMATE.start_gcd_test_~b#1| (_ BitVec 32))) (not (= (_ bv0 32) (bvadd (bvneg (bvadd |c_ULTIMATE.start_gcd_test_~a#1| (bvneg |ULTIMATE.start_gcd_test_~b#1|))) |ULTIMATE.start_gcd_test_~b#1|))))) is different from false [2024-11-14 03:44:27,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 03:44:29,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 03:44:29,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:44:29,759 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2024-11-14 03:44:29,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-14 03:44:29,759 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-14 03:44:29,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:44:29,765 INFO L225 Difference]: With dead ends: 88 [2024-11-14 03:44:29,765 INFO L226 Difference]: Without dead ends: 77 [2024-11-14 03:44:29,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 141 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 38.0s TimeCoverageRelationStatistics Valid=116, Invalid=270, Unknown=14, NotChecked=200, Total=600 [2024-11-14 03:44:29,766 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 15 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 11 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 168 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:44:29,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 293 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 135 Invalid, 4 Unknown, 168 Unchecked, 10.1s Time] [2024-11-14 03:44:29,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-14 03:44:29,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2024-11-14 03:44:29,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 61 states have internal predecessors, (73), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 03:44:29,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2024-11-14 03:44:29,791 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 27 [2024-11-14 03:44:29,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:44:29,791 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2024-11-14 03:44:29,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:44:29,792 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2024-11-14 03:44:29,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 03:44:29,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:44:29,793 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:44:29,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2024-11-14 03:44:30,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-14 03:44:30,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-11-14 03:44:30,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:44:30,394 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:44:30,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:44:30,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1024310784, now seen corresponding path program 1 times [2024-11-14 03:44:30,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:44:30,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618846757] [2024-11-14 03:44:30,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:44:30,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:44:30,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:44:30,397 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:44:30,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-14 03:44:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:44:30,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 03:44:30,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:44:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:44:32,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:44:38,587 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:44:38,588 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:44:38,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618846757] [2024-11-14 03:44:38,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618846757] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:44:38,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [238832708] [2024-11-14 03:44:38,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:44:38,588 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:44:38,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:44:38,590 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:44:38,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-14 03:44:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:44:38,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 03:44:38,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:44:41,301 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:44:41,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:44:42,804 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:44:42,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [238832708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:44:42,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488499401] [2024-11-14 03:44:42,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:44:42,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:44:42,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:44:42,807 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:44:42,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-14 03:44:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:44:42,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-14 03:44:42,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:44:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:44:44,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:45:16,276 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:45:16,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488499401] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:45:16,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:45:16,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11, 10, 13, 14] total 34 [2024-11-14 03:45:16,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618750520] [2024-11-14 03:45:16,277 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:45:16,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 03:45:16,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:45:16,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 03:45:16,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 03:45:16,280 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 34 states, 30 states have (on average 2.5) internal successors, (75), 33 states have internal predecessors, (75), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 03:45:39,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:45:39,195 INFO L93 Difference]: Finished difference Result 93 states and 117 transitions. [2024-11-14 03:45:39,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-14 03:45:39,200 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 2.5) internal successors, (75), 33 states have internal predecessors, (75), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) Word has length 28 [2024-11-14 03:45:39,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:45:39,202 INFO L225 Difference]: With dead ends: 93 [2024-11-14 03:45:39,202 INFO L226 Difference]: Without dead ends: 82 [2024-11-14 03:45:39,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 43.1s TimeCoverageRelationStatistics Valid=183, Invalid=1223, Unknown=0, NotChecked=0, Total=1406 [2024-11-14 03:45:39,204 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:45:39,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 650 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2024-11-14 03:45:39,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-14 03:45:39,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-14 03:45:39,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 68 states have internal predecessors, (83), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 03:45:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 104 transitions. [2024-11-14 03:45:39,245 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 104 transitions. Word has length 28 [2024-11-14 03:45:39,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:45:39,246 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 104 transitions. [2024-11-14 03:45:39,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 2.5) internal successors, (75), 33 states have internal predecessors, (75), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 03:45:39,246 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 104 transitions. [2024-11-14 03:45:39,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-14 03:45:39,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:45:39,247 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:45:39,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2024-11-14 03:45:39,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-11-14 03:45:39,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-14 03:45:39,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:45:39,849 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:45:39,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:45:39,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1494164943, now seen corresponding path program 1 times [2024-11-14 03:45:39,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:45:39,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809805529] [2024-11-14 03:45:39,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:45:39,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:45:39,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:45:39,852 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:45:39,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6514cf7-7612-400e-abdd-19db52c054ca/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process