./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-44.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-44.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f5e750e5fa316e30fef8e3158d304f9d418ce308f7b74e89da459ba726747abe --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:38:30,518 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:38:30,572 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 13:38:30,577 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:38:30,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:38:30,599 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:38:30,599 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:38:30,599 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:38:30,600 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:38:30,600 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:38:30,600 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:38:30,600 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:38:30,600 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:38:30,600 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:38:30,600 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:38:30,601 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:38:30,601 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:38:30,601 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:38:30,601 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:38:30,601 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:38:30,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:38:30,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:38:30,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:38:30,601 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:38:30,601 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:38:30,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:38:30,601 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:38:30,602 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:38:30,602 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:38:30,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:38:30,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:38:30,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:38:30,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:38:30,602 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:38:30,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:38:30,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:38:30,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:38:30,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:38:30,602 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:38:30,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:38:30,603 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:38:30,603 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:38:30,603 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:38:30,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:38:30,603 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:38:30,603 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:38:30,603 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:38:30,603 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:38:30,603 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1 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 -> Automizer 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 -> f5e750e5fa316e30fef8e3158d304f9d418ce308f7b74e89da459ba726747abe [2024-12-02 13:38:30,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:38:30,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:38:30,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:38:30,854 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:38:30,855 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:38:30,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-44.i [2024-12-02 13:38:33,562 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/data/b2f05cd28/057d46aea9cc45afaee0e4a80ff9a0bd/FLAG40cd97ca0 [2024-12-02 13:38:33,738 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:38:33,739 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-44.i [2024-12-02 13:38:33,747 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/data/b2f05cd28/057d46aea9cc45afaee0e4a80ff9a0bd/FLAG40cd97ca0 [2024-12-02 13:38:33,762 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/data/b2f05cd28/057d46aea9cc45afaee0e4a80ff9a0bd [2024-12-02 13:38:33,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:38:33,766 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:38:33,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:38:33,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:38:33,772 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:38:33,772 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:38:33" (1/1) ... [2024-12-02 13:38:33,773 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d442831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:33, skipping insertion in model container [2024-12-02 13:38:33,773 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:38:33" (1/1) ... [2024-12-02 13:38:33,790 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:38:33,933 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_466afd97-c07c-4241-a306-0ca179572b67/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-44.i[916,929] [2024-12-02 13:38:33,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:38:34,000 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:38:34,011 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_466afd97-c07c-4241-a306-0ca179572b67/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-44.i[916,929] [2024-12-02 13:38:34,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:38:34,066 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:38:34,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:34 WrapperNode [2024-12-02 13:38:34,067 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:38:34,068 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:38:34,068 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:38:34,068 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:38:34,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:34" (1/1) ... [2024-12-02 13:38:34,087 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:34" (1/1) ... [2024-12-02 13:38:34,121 INFO L138 Inliner]: procedures = 30, calls = 164, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 484 [2024-12-02 13:38:34,122 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:38:34,122 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:38:34,122 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:38:34,122 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:38:34,132 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:34" (1/1) ... [2024-12-02 13:38:34,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:34" (1/1) ... [2024-12-02 13:38:34,138 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:34" (1/1) ... [2024-12-02 13:38:34,145 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-12-02 13:38:34,145 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:34" (1/1) ... [2024-12-02 13:38:34,145 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:34" (1/1) ... [2024-12-02 13:38:34,164 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:34" (1/1) ... [2024-12-02 13:38:34,166 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:34" (1/1) ... [2024-12-02 13:38:34,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:34" (1/1) ... [2024-12-02 13:38:34,173 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:34" (1/1) ... [2024-12-02 13:38:34,175 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:34" (1/1) ... [2024-12-02 13:38:34,180 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:38:34,180 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:38:34,181 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:38:34,181 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:38:34,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:34" (1/1) ... [2024-12-02 13:38:34,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:38:34,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:38:34,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:38:34,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:38:34,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:38:34,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-12-02 13:38:34,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-12-02 13:38:34,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-12-02 13:38:34,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-02 13:38:34,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-12-02 13:38:34,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-02 13:38:34,244 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 13:38:34,244 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 13:38:34,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-02 13:38:34,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:38:34,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:38:34,346 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:38:34,348 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:38:34,912 INFO L? ?]: Removed 120 outVars from TransFormulas that were not future-live. [2024-12-02 13:38:34,912 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:38:34,924 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:38:34,925 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 13:38:34,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:38:34 BoogieIcfgContainer [2024-12-02 13:38:34,925 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:38:34,928 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:38:34,928 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:38:34,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:38:34,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:38:33" (1/3) ... [2024-12-02 13:38:34,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ca5fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:38:34, skipping insertion in model container [2024-12-02 13:38:34,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:34" (2/3) ... [2024-12-02 13:38:34,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ca5fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:38:34, skipping insertion in model container [2024-12-02 13:38:34,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:38:34" (3/3) ... [2024-12-02 13:38:34,935 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-44.i [2024-12-02 13:38:34,951 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:38:34,953 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-s_file-44.i that has 2 procedures, 118 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 13:38:34,998 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:38:35,008 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=PETRI_NET, 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;@54e2ded0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:38:35,008 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 13:38:35,012 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 94 states have (on average 1.3829787234042554) internal successors, (130), 95 states have internal predecessors, (130), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-12-02 13:38:35,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-12-02 13:38:35,024 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:35,025 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:35,025 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:35,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:35,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1924656963, now seen corresponding path program 1 times [2024-12-02 13:38:35,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:35,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010891915] [2024-12-02 13:38:35,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:35,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-12-02 13:38:35,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:35,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010891915] [2024-12-02 13:38:35,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010891915] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:38:35,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193766782] [2024-12-02 13:38:35,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:35,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:35,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:38:35,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:38:35,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:38:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:35,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 13:38:35,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:38:35,652 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-12-02 13:38:35,652 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:38:35,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193766782] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:35,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:38:35,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 13:38:35,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497611145] [2024-12-02 13:38:35,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:35,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 13:38:35,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:35,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 13:38:35,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:38:35,681 INFO L87 Difference]: Start difference. First operand has 118 states, 94 states have (on average 1.3829787234042554) internal successors, (130), 95 states have internal predecessors, (130), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:38:35,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:35,707 INFO L93 Difference]: Finished difference Result 229 states and 359 transitions. [2024-12-02 13:38:35,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 13:38:35,709 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) Word has length 159 [2024-12-02 13:38:35,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:35,714 INFO L225 Difference]: With dead ends: 229 [2024-12-02 13:38:35,714 INFO L226 Difference]: Without dead ends: 114 [2024-12-02 13:38:35,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:38:35,720 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:35,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:38:35,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-12-02 13:38:35,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-12-02 13:38:35,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 91 states have (on average 1.3516483516483517) internal successors, (123), 91 states have internal predecessors, (123), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-12-02 13:38:35,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 165 transitions. [2024-12-02 13:38:35,761 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 165 transitions. Word has length 159 [2024-12-02 13:38:35,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:35,761 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 165 transitions. [2024-12-02 13:38:35,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:38:35,762 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 165 transitions. [2024-12-02 13:38:35,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-12-02 13:38:35,765 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:35,765 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:35,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:38:35,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:35,966 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:35,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:35,966 INFO L85 PathProgramCache]: Analyzing trace with hash -781629009, now seen corresponding path program 1 times [2024-12-02 13:38:35,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:35,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146668545] [2024-12-02 13:38:35,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:35,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-12-02 13:38:36,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:36,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146668545] [2024-12-02 13:38:36,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146668545] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:36,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:36,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:38:36,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355995754] [2024-12-02 13:38:36,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:36,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:38:36,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:36,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:38:36,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:38:36,292 INFO L87 Difference]: Start difference. First operand 114 states and 165 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:38:36,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:36,330 INFO L93 Difference]: Finished difference Result 227 states and 330 transitions. [2024-12-02 13:38:36,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:38:36,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 159 [2024-12-02 13:38:36,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:36,333 INFO L225 Difference]: With dead ends: 227 [2024-12-02 13:38:36,333 INFO L226 Difference]: Without dead ends: 116 [2024-12-02 13:38:36,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:38:36,335 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 0 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:36,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 478 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:38:36,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-12-02 13:38:36,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-12-02 13:38:36,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 93 states have (on average 1.3440860215053763) internal successors, (125), 93 states have internal predecessors, (125), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-12-02 13:38:36,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 167 transitions. [2024-12-02 13:38:36,347 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 167 transitions. Word has length 159 [2024-12-02 13:38:36,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:36,349 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 167 transitions. [2024-12-02 13:38:36,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:38:36,350 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 167 transitions. [2024-12-02 13:38:36,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-12-02 13:38:36,352 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:36,352 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:36,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:38:36,353 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:36,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:36,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1483228883, now seen corresponding path program 1 times [2024-12-02 13:38:36,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:36,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262859473] [2024-12-02 13:38:36,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:36,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:36,547 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-12-02 13:38:36,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:36,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262859473] [2024-12-02 13:38:36,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262859473] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:36,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:36,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:38:36,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103999826] [2024-12-02 13:38:36,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:36,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:38:36,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:36,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:38:36,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:38:36,549 INFO L87 Difference]: Start difference. First operand 116 states and 167 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 13:38:36,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:36,590 INFO L93 Difference]: Finished difference Result 232 states and 335 transitions. [2024-12-02 13:38:36,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:38:36,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 159 [2024-12-02 13:38:36,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:36,592 INFO L225 Difference]: With dead ends: 232 [2024-12-02 13:38:36,592 INFO L226 Difference]: Without dead ends: 119 [2024-12-02 13:38:36,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:38:36,594 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 1 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:36,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 477 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:38:36,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-12-02 13:38:36,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2024-12-02 13:38:36,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 95 states have (on average 1.3368421052631578) internal successors, (127), 95 states have internal predecessors, (127), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-12-02 13:38:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 169 transitions. [2024-12-02 13:38:36,604 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 169 transitions. Word has length 159 [2024-12-02 13:38:36,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:36,604 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 169 transitions. [2024-12-02 13:38:36,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 13:38:36,605 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 169 transitions. [2024-12-02 13:38:36,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-12-02 13:38:36,607 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:36,607 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:36,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 13:38:36,607 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:36,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:36,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1481381841, now seen corresponding path program 1 times [2024-12-02 13:38:36,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:36,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156039073] [2024-12-02 13:38:36,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:36,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-12-02 13:38:37,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:37,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156039073] [2024-12-02 13:38:37,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156039073] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:37,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:37,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:38:37,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705863874] [2024-12-02 13:38:37,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:37,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:38:37,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:37,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:38:37,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:38:37,146 INFO L87 Difference]: Start difference. First operand 118 states and 169 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 13:38:37,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:37,502 INFO L93 Difference]: Finished difference Result 287 states and 412 transitions. [2024-12-02 13:38:37,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:38:37,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 159 [2024-12-02 13:38:37,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:37,505 INFO L225 Difference]: With dead ends: 287 [2024-12-02 13:38:37,506 INFO L226 Difference]: Without dead ends: 172 [2024-12-02 13:38:37,506 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:38:37,507 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 63 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:37,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 555 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:38:37,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-12-02 13:38:37,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 136. [2024-12-02 13:38:37,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 113 states have (on average 1.3628318584070795) internal successors, (154), 113 states have internal predecessors, (154), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-12-02 13:38:37,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 196 transitions. [2024-12-02 13:38:37,520 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 196 transitions. Word has length 159 [2024-12-02 13:38:37,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:37,521 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 196 transitions. [2024-12-02 13:38:37,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 13:38:37,521 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 196 transitions. [2024-12-02 13:38:37,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 13:38:37,523 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:37,524 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:37,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 13:38:37,524 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:37,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:37,524 INFO L85 PathProgramCache]: Analyzing trace with hash -390938977, now seen corresponding path program 1 times [2024-12-02 13:38:37,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:37,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069949696] [2024-12-02 13:38:37,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:37,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:40,029 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-12-02 13:38:40,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:40,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069949696] [2024-12-02 13:38:40,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069949696] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:40,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:40,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 13:38:40,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422087002] [2024-12-02 13:38:40,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:40,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 13:38:40,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:40,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 13:38:40,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:38:40,032 INFO L87 Difference]: Start difference. First operand 136 states and 196 transitions. Second operand has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:38:41,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:41,002 INFO L93 Difference]: Finished difference Result 314 states and 448 transitions. [2024-12-02 13:38:41,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 13:38:41,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) Word has length 160 [2024-12-02 13:38:41,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:41,005 INFO L225 Difference]: With dead ends: 314 [2024-12-02 13:38:41,005 INFO L226 Difference]: Without dead ends: 181 [2024-12-02 13:38:41,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:38:41,006 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 70 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:41,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1013 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 13:38:41,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-12-02 13:38:41,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 177. [2024-12-02 13:38:41,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 151 states have (on average 1.3576158940397351) internal successors, (205), 152 states have internal predecessors, (205), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-12-02 13:38:41,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 251 transitions. [2024-12-02 13:38:41,021 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 251 transitions. Word has length 160 [2024-12-02 13:38:41,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:41,021 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 251 transitions. [2024-12-02 13:38:41,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:38:41,021 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 251 transitions. [2024-12-02 13:38:41,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 13:38:41,023 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:41,024 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:41,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 13:38:41,024 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:41,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:41,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1793675834, now seen corresponding path program 1 times [2024-12-02 13:38:41,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:41,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428762520] [2024-12-02 13:38:41,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:41,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 24 proven. 36 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-12-02 13:38:41,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:41,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428762520] [2024-12-02 13:38:41,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428762520] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:38:41,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322618089] [2024-12-02 13:38:41,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:41,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:41,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:38:41,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:38:41,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 13:38:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:41,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 13:38:41,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:38:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-12-02 13:38:41,632 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:38:41,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322618089] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:41,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:38:41,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-12-02 13:38:41,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618422311] [2024-12-02 13:38:41,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:41,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:38:41,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:41,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:38:41,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:38:41,634 INFO L87 Difference]: Start difference. First operand 177 states and 251 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 13:38:41,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:41,677 INFO L93 Difference]: Finished difference Result 357 states and 507 transitions. [2024-12-02 13:38:41,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:38:41,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 161 [2024-12-02 13:38:41,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:41,682 INFO L225 Difference]: With dead ends: 357 [2024-12-02 13:38:41,682 INFO L226 Difference]: Without dead ends: 183 [2024-12-02 13:38:41,683 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:38:41,683 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:41,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 631 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:38:41,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-12-02 13:38:41,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-12-02 13:38:41,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 157 states have (on average 1.3439490445859872) internal successors, (211), 158 states have internal predecessors, (211), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-12-02 13:38:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 257 transitions. [2024-12-02 13:38:41,697 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 257 transitions. Word has length 161 [2024-12-02 13:38:41,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:41,697 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 257 transitions. [2024-12-02 13:38:41,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 13:38:41,697 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 257 transitions. [2024-12-02 13:38:41,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-12-02 13:38:41,699 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:41,699 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:41,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 13:38:41,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 13:38:41,900 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:41,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:41,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1401103225, now seen corresponding path program 1 times [2024-12-02 13:38:41,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:41,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455682137] [2024-12-02 13:38:41,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:41,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-12-02 13:38:43,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:43,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455682137] [2024-12-02 13:38:43,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455682137] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:43,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:43,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 13:38:43,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901644775] [2024-12-02 13:38:43,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:43,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:38:43,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:43,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:38:43,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:38:43,792 INFO L87 Difference]: Start difference. First operand 183 states and 257 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:38:44,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:44,373 INFO L93 Difference]: Finished difference Result 364 states and 507 transitions. [2024-12-02 13:38:44,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:38:44,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) Word has length 163 [2024-12-02 13:38:44,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:44,375 INFO L225 Difference]: With dead ends: 364 [2024-12-02 13:38:44,376 INFO L226 Difference]: Without dead ends: 184 [2024-12-02 13:38:44,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:38:44,377 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 64 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:44,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 609 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 13:38:44,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-12-02 13:38:44,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 143. [2024-12-02 13:38:44,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 119 states have (on average 1.3277310924369747) internal successors, (158), 119 states have internal predecessors, (158), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-12-02 13:38:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 200 transitions. [2024-12-02 13:38:44,387 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 200 transitions. Word has length 163 [2024-12-02 13:38:44,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:44,388 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 200 transitions. [2024-12-02 13:38:44,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:38:44,388 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 200 transitions. [2024-12-02 13:38:44,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-12-02 13:38:44,390 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:44,390 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:44,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 13:38:44,390 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:44,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:44,391 INFO L85 PathProgramCache]: Analyzing trace with hash 2045035359, now seen corresponding path program 1 times [2024-12-02 13:38:44,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:44,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400604706] [2024-12-02 13:38:44,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:44,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-12-02 13:38:44,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:44,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400604706] [2024-12-02 13:38:44,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400604706] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:44,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:44,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:38:44,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165868985] [2024-12-02 13:38:44,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:44,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:38:44,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:44,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:38:44,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:38:44,527 INFO L87 Difference]: Start difference. First operand 143 states and 200 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 13:38:44,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:44,540 INFO L93 Difference]: Finished difference Result 283 states and 397 transitions. [2024-12-02 13:38:44,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:38:44,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 163 [2024-12-02 13:38:44,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:44,543 INFO L225 Difference]: With dead ends: 283 [2024-12-02 13:38:44,543 INFO L226 Difference]: Without dead ends: 143 [2024-12-02 13:38:44,543 INFO L434 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 [2024-12-02 13:38:44,544 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 0 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:44,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 322 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:38:44,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-12-02 13:38:44,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-12-02 13:38:44,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 119 states have (on average 1.319327731092437) internal successors, (157), 119 states have internal predecessors, (157), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-12-02 13:38:44,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 199 transitions. [2024-12-02 13:38:44,553 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 199 transitions. Word has length 163 [2024-12-02 13:38:44,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:44,554 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 199 transitions. [2024-12-02 13:38:44,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 13:38:44,554 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 199 transitions. [2024-12-02 13:38:44,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 13:38:44,555 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:44,555 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:44,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 13:38:44,555 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:44,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:44,556 INFO L85 PathProgramCache]: Analyzing trace with hash 206240503, now seen corresponding path program 1 times [2024-12-02 13:38:44,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:44,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499639297] [2024-12-02 13:38:44,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:44,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:45,568 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-12-02 13:38:45,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:45,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499639297] [2024-12-02 13:38:45,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499639297] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:45,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:45,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:38:45,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909668935] [2024-12-02 13:38:45,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:45,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:38:45,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:45,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:38:45,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:38:45,570 INFO L87 Difference]: Start difference. First operand 143 states and 199 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 13:38:45,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:45,823 INFO L93 Difference]: Finished difference Result 423 states and 591 transitions. [2024-12-02 13:38:45,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:38:45,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 164 [2024-12-02 13:38:45,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:45,825 INFO L225 Difference]: With dead ends: 423 [2024-12-02 13:38:45,826 INFO L226 Difference]: Without dead ends: 283 [2024-12-02 13:38:45,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:38:45,827 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 97 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:45,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 284 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:38:45,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-12-02 13:38:45,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 269. [2024-12-02 13:38:45,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 222 states have (on average 1.3063063063063063) internal successors, (290), 222 states have internal predecessors, (290), 42 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-12-02 13:38:45,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 374 transitions. [2024-12-02 13:38:45,849 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 374 transitions. Word has length 164 [2024-12-02 13:38:45,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:45,849 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 374 transitions. [2024-12-02 13:38:45,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 13:38:45,850 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 374 transitions. [2024-12-02 13:38:45,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-12-02 13:38:45,851 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:45,851 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:45,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 13:38:45,851 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:45,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:45,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1670063198, now seen corresponding path program 1 times [2024-12-02 13:38:45,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:45,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230538653] [2024-12-02 13:38:45,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:45,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:45,968 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-12-02 13:38:45,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:45,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230538653] [2024-12-02 13:38:45,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230538653] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:45,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:45,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:38:45,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839184222] [2024-12-02 13:38:45,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:45,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:38:45,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:45,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:38:45,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:38:45,969 INFO L87 Difference]: Start difference. First operand 269 states and 374 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 13:38:46,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:46,182 INFO L93 Difference]: Finished difference Result 537 states and 747 transitions. [2024-12-02 13:38:46,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:38:46,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 165 [2024-12-02 13:38:46,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:46,185 INFO L225 Difference]: With dead ends: 537 [2024-12-02 13:38:46,185 INFO L226 Difference]: Without dead ends: 271 [2024-12-02 13:38:46,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:38:46,186 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 2 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:46,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 413 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:38:46,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-12-02 13:38:46,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 269. [2024-12-02 13:38:46,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 222 states have (on average 1.2882882882882882) internal successors, (286), 222 states have internal predecessors, (286), 42 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-12-02 13:38:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 370 transitions. [2024-12-02 13:38:46,205 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 370 transitions. Word has length 165 [2024-12-02 13:38:46,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:46,205 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 370 transitions. [2024-12-02 13:38:46,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 13:38:46,206 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 370 transitions. [2024-12-02 13:38:46,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-12-02 13:38:46,207 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:46,207 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:46,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 13:38:46,207 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:46,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:46,208 INFO L85 PathProgramCache]: Analyzing trace with hash 694461997, now seen corresponding path program 1 times [2024-12-02 13:38:46,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:46,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002990077] [2024-12-02 13:38:46,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:46,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:47,836 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-12-02 13:38:47,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:47,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002990077] [2024-12-02 13:38:47,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002990077] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:47,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:47,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 13:38:47,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410290461] [2024-12-02 13:38:47,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:47,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 13:38:47,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:47,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 13:38:47,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:38:47,838 INFO L87 Difference]: Start difference. First operand 269 states and 370 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:38:48,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:48,898 INFO L93 Difference]: Finished difference Result 692 states and 943 transitions. [2024-12-02 13:38:48,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 13:38:48,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) Word has length 166 [2024-12-02 13:38:48,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:48,901 INFO L225 Difference]: With dead ends: 692 [2024-12-02 13:38:48,901 INFO L226 Difference]: Without dead ends: 426 [2024-12-02 13:38:48,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-12-02 13:38:48,903 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 78 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:48,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1175 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 13:38:48,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2024-12-02 13:38:48,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 417. [2024-12-02 13:38:48,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 350 states have (on average 1.28) internal successors, (448), 352 states have internal predecessors, (448), 58 states have call successors, (58), 8 states have call predecessors, (58), 8 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2024-12-02 13:38:48,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 564 transitions. [2024-12-02 13:38:48,935 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 564 transitions. Word has length 166 [2024-12-02 13:38:48,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:48,935 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 564 transitions. [2024-12-02 13:38:48,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:38:48,935 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 564 transitions. [2024-12-02 13:38:48,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-12-02 13:38:48,936 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:48,937 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:48,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 13:38:48,937 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:48,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:48,937 INFO L85 PathProgramCache]: Analyzing trace with hash 835010607, now seen corresponding path program 1 times [2024-12-02 13:38:48,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:48,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367864492] [2024-12-02 13:38:48,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:48,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:52,478 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-12-02 13:38:52,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:52,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367864492] [2024-12-02 13:38:52,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367864492] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:38:52,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251748604] [2024-12-02 13:38:52,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:52,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:52,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:38:52,480 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:38:52,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 13:38:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:52,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 13:38:52,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:38:52,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 13:38:52,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 13:38:52,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 13:38:52,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 13:38:52,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 13:38:52,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 13:38:52,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 13:38:52,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 13:38:52,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 13:38:52,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 13:38:53,193 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 13:38:53,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 57 [2024-12-02 13:38:53,321 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 13:38:53,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 75 [2024-12-02 13:38:53,541 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 13:38:53,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 126 treesize of output 42 [2024-12-02 13:38:53,641 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-12-02 13:38:53,641 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:38:53,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251748604] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:53,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:38:53,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2024-12-02 13:38:53,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825181889] [2024-12-02 13:38:53,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:53,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 13:38:53,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:53,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 13:38:53,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2024-12-02 13:38:53,643 INFO L87 Difference]: Start difference. First operand 417 states and 564 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 13:38:55,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:55,155 INFO L93 Difference]: Finished difference Result 1091 states and 1465 transitions. [2024-12-02 13:38:55,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:38:55,156 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 166 [2024-12-02 13:38:55,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:55,158 INFO L225 Difference]: With dead ends: 1091 [2024-12-02 13:38:55,158 INFO L226 Difference]: Without dead ends: 677 [2024-12-02 13:38:55,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 170 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2024-12-02 13:38:55,160 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 139 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:55,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1048 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 13:38:55,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-12-02 13:38:55,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 455. [2024-12-02 13:38:55,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 388 states have (on average 1.2938144329896908) internal successors, (502), 390 states have internal predecessors, (502), 58 states have call successors, (58), 8 states have call predecessors, (58), 8 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2024-12-02 13:38:55,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 618 transitions. [2024-12-02 13:38:55,190 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 618 transitions. Word has length 166 [2024-12-02 13:38:55,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:55,190 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 618 transitions. [2024-12-02 13:38:55,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 13:38:55,191 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 618 transitions. [2024-12-02 13:38:55,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-12-02 13:38:55,192 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:55,192 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:55,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 13:38:55,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466afd97-c07c-4241-a306-0ca179572b67/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:55,393 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:55,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:55,393 INFO L85 PathProgramCache]: Analyzing trace with hash -176106643, now seen corresponding path program 1 times [2024-12-02 13:38:55,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:55,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476390062] [2024-12-02 13:38:55,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:55,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-12-02 13:38:56,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:56,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476390062] [2024-12-02 13:38:56,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476390062] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:56,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:56,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 13:38:56,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225830590] [2024-12-02 13:38:56,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:56,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:38:56,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:56,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:38:56,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:38:56,711 INFO L87 Difference]: Start difference. First operand 455 states and 618 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 13:38:57,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:57,143 INFO L93 Difference]: Finished difference Result 1119 states and 1514 transitions. [2024-12-02 13:38:57,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:38:57,144 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 166 [2024-12-02 13:38:57,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:57,147 INFO L225 Difference]: With dead ends: 1119 [2024-12-02 13:38:57,147 INFO L226 Difference]: Without dead ends: 667 [2024-12-02 13:38:57,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:38:57,149 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 60 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:57,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 470 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:38:57,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-12-02 13:38:57,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 489. [2024-12-02 13:38:57,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 422 states have (on average 1.2890995260663507) internal successors, (544), 424 states have internal predecessors, (544), 58 states have call successors, (58), 8 states have call predecessors, (58), 8 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2024-12-02 13:38:57,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 660 transitions. [2024-12-02 13:38:57,182 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 660 transitions. Word has length 166 [2024-12-02 13:38:57,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:57,183 INFO L471 AbstractCegarLoop]: Abstraction has 489 states and 660 transitions. [2024-12-02 13:38:57,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 13:38:57,183 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 660 transitions. [2024-12-02 13:38:57,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-12-02 13:38:57,184 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:57,184 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:57,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 13:38:57,184 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:57,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:57,185 INFO L85 PathProgramCache]: Analyzing trace with hash -753337295, now seen corresponding path program 1 times [2024-12-02 13:38:57,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:57,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720845126] [2024-12-02 13:38:57,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:57,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:27,422 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: incomplete