./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-58.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_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/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_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-58.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/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_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/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 730b0997679b06e2176dc62362c6855c3d3cc0770153581e48e0f33bef8d293d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:20:56,631 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:20:56,683 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:20:56,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:20:56,687 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:20:56,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:20:56,707 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:20:56,708 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:20:56,708 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:20:56,708 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:20:56,708 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:20:56,708 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:20:56,708 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:20:56,709 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:20:56,709 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:20:56,709 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:20:56,709 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:20:56,709 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:20:56,709 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:20:56,709 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:20:56,709 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:20:56,709 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:20:56,710 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:20:56,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:20:56,710 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:20:56,710 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:20:56,710 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:20:56,710 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:20:56,710 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:20:56,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:20:56,710 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:20:56,710 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:20:56,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:20:56,711 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:20:56,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:20:56,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:20:56,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:20:56,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:20:56,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:20:56,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:20:56,711 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:20:56,711 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:20:56,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:20:56,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:20:56,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:20:56,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:20:56,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:20:56,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:20:56,712 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_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/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 -> 730b0997679b06e2176dc62362c6855c3d3cc0770153581e48e0f33bef8d293d [2024-12-02 14:20:56,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:20:56,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:20:56,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:20:56,924 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:20:56,925 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:20:56,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-58.i [2024-12-02 14:20:59,541 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/bin/uautomizer-verify-84ZbGMXZE1/data/941eee068/909a08af5f4f4164879060921d749b56/FLAGd707ae745 [2024-12-02 14:20:59,767 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:20:59,768 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-58.i [2024-12-02 14:20:59,776 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/bin/uautomizer-verify-84ZbGMXZE1/data/941eee068/909a08af5f4f4164879060921d749b56/FLAGd707ae745 [2024-12-02 14:20:59,791 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/bin/uautomizer-verify-84ZbGMXZE1/data/941eee068/909a08af5f4f4164879060921d749b56 [2024-12-02 14:20:59,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:20:59,794 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:20:59,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:20:59,796 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:20:59,800 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:20:59,800 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:20:59" (1/1) ... [2024-12-02 14:20:59,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36200891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:59, skipping insertion in model container [2024-12-02 14:20:59,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:20:59" (1/1) ... [2024-12-02 14:20:59,819 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:20:59,945 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_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-58.i[917,930] [2024-12-02 14:20:59,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:21:00,008 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:21:00,018 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_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-58.i[917,930] [2024-12-02 14:21:00,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:21:00,066 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:21:00,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:21:00 WrapperNode [2024-12-02 14:21:00,066 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:21:00,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:21:00,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:21:00,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:21:00,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:21:00" (1/1) ... [2024-12-02 14:21:00,084 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:21:00" (1/1) ... [2024-12-02 14:21:00,114 INFO L138 Inliner]: procedures = 27, calls = 152, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 447 [2024-12-02 14:21:00,115 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:21:00,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:21:00,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:21:00,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:21:00,124 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:21:00" (1/1) ... [2024-12-02 14:21:00,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:21:00" (1/1) ... [2024-12-02 14:21:00,129 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:21:00" (1/1) ... [2024-12-02 14:21:00,146 INFO L175 MemorySlicer]: Split 126 memory accesses to 2 slices as follows [2, 124]. 98 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 27 writes are split as follows [0, 27]. [2024-12-02 14:21:00,146 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:21:00" (1/1) ... [2024-12-02 14:21:00,146 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:21:00" (1/1) ... [2024-12-02 14:21:00,158 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:21:00" (1/1) ... [2024-12-02 14:21:00,159 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:21:00" (1/1) ... [2024-12-02 14:21:00,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:21:00" (1/1) ... [2024-12-02 14:21:00,165 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:21:00" (1/1) ... [2024-12-02 14:21:00,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:21:00" (1/1) ... [2024-12-02 14:21:00,171 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:21:00,171 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:21:00,172 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:21:00,172 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:21:00,172 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:21:00" (1/1) ... [2024-12-02 14:21:00,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:21:00,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:21:00,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:21:00,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:21:00,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:21:00,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 14:21:00,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 14:21:00,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 14:21:00,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 14:21:00,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 14:21:00,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 14:21:00,226 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 14:21:00,226 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 14:21:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:21:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 14:21:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:21:00,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:21:00,330 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:21:00,332 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:21:00,732 INFO L? ?]: Removed 126 outVars from TransFormulas that were not future-live. [2024-12-02 14:21:00,732 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:21:00,741 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:21:00,741 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 14:21:00,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:21:00 BoogieIcfgContainer [2024-12-02 14:21:00,741 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:21:00,743 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:21:00,743 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:21:00,747 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:21:00,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:20:59" (1/3) ... [2024-12-02 14:21:00,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a60e274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:21:00, skipping insertion in model container [2024-12-02 14:21:00,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:21:00" (2/3) ... [2024-12-02 14:21:00,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a60e274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:21:00, skipping insertion in model container [2024-12-02 14:21:00,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:21:00" (3/3) ... [2024-12-02 14:21:00,749 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-58.i [2024-12-02 14:21:00,761 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:21:00,762 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-sp_file-58.i that has 2 procedures, 92 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 14:21:00,803 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:21:00,814 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;@4ad6dab3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:21:00,814 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:21:00,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 74 states have (on average 1.3918918918918919) internal successors, (103), 75 states have internal predecessors, (103), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-12-02 14:21:00,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 14:21:00,826 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:00,826 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:00,827 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:00,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:00,831 INFO L85 PathProgramCache]: Analyzing trace with hash -773362153, now seen corresponding path program 1 times [2024-12-02 14:21:00,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:00,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028325788] [2024-12-02 14:21:00,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:00,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:01,092 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-12-02 14:21:01,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:01,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028325788] [2024-12-02 14:21:01,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028325788] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:21:01,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032653069] [2024-12-02 14:21:01,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:01,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:21:01,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:21:01,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:21:01,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:21:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:01,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 14:21:01,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:21:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-12-02 14:21:01,308 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:21:01,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032653069] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:01,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:21:01,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 14:21:01,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753221050] [2024-12-02 14:21:01,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:01,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 14:21:01,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:01,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 14:21:01,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:21:01,332 INFO L87 Difference]: Start difference. First operand has 92 states, 74 states have (on average 1.3918918918918919) internal successors, (103), 75 states have internal predecessors, (103), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 14:21:01,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:01,352 INFO L93 Difference]: Finished difference Result 173 states and 269 transitions. [2024-12-02 14:21:01,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 14:21:01,354 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2024-12-02 14:21:01,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:01,359 INFO L225 Difference]: With dead ends: 173 [2024-12-02 14:21:01,359 INFO L226 Difference]: Without dead ends: 84 [2024-12-02 14:21:01,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 117 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 14:21:01,364 INFO L435 NwaCegarLoop]: 118 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, 118 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 14:21:01,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:21:01,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-12-02 14:21:01,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-12-02 14:21:01,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 67 states have (on average 1.3134328358208955) internal successors, (88), 67 states have internal predecessors, (88), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-12-02 14:21:01,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 118 transitions. [2024-12-02 14:21:01,395 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 118 transitions. Word has length 116 [2024-12-02 14:21:01,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:01,396 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 118 transitions. [2024-12-02 14:21:01,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 14:21:01,396 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 118 transitions. [2024-12-02 14:21:01,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 14:21:01,398 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:01,398 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:01,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:21:01,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78dbbe3-0b00-45e1-862d-8a3ee2ca3ad8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 14:21:01,599 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:01,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:01,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1258197323, now seen corresponding path program 1 times [2024-12-02 14:21:01,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:01,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133853195] [2024-12-02 14:21:01,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:01,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:01,871 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-12-02 14:21:01,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:01,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133853195] [2024-12-02 14:21:01,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133853195] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:01,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:21:01,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:21:01,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535329035] [2024-12-02 14:21:01,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:01,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:21:01,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:01,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:21:01,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:21:01,874 INFO L87 Difference]: Start difference. First operand 84 states and 118 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-12-02 14:21:01,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:01,915 INFO L93 Difference]: Finished difference Result 168 states and 237 transitions. [2024-12-02 14:21:01,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:21:01,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 116 [2024-12-02 14:21:01,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:01,917 INFO L225 Difference]: With dead ends: 168 [2024-12-02 14:21:01,917 INFO L226 Difference]: Without dead ends: 87 [2024-12-02 14:21:01,917 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 14:21:01,918 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 1 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 336 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 14:21:01,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 336 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:21:01,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-12-02 14:21:01,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2024-12-02 14:21:01,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 69 states have internal predecessors, (90), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-12-02 14:21:01,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions. [2024-12-02 14:21:01,928 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 120 transitions. Word has length 116 [2024-12-02 14:21:01,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:01,929 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 120 transitions. [2024-12-02 14:21:01,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-12-02 14:21:01,929 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 120 transitions. [2024-12-02 14:21:01,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 14:21:01,931 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:01,931 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:01,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:21:01,931 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:01,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:01,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1256350281, now seen corresponding path program 1 times [2024-12-02 14:21:01,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:01,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961440023] [2024-12-02 14:21:01,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:01,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-12-02 14:21:03,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:03,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961440023] [2024-12-02 14:21:03,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961440023] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:03,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:21:03,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:21:03,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272843392] [2024-12-02 14:21:03,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:03,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:21:03,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:03,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:21:03,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:21:03,737 INFO L87 Difference]: Start difference. First operand 86 states and 120 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-12-02 14:21:04,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:04,332 INFO L93 Difference]: Finished difference Result 209 states and 292 transitions. [2024-12-02 14:21:04,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:21:04,333 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 116 [2024-12-02 14:21:04,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:04,335 INFO L225 Difference]: With dead ends: 209 [2024-12-02 14:21:04,335 INFO L226 Difference]: Without dead ends: 126 [2024-12-02 14:21:04,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:21:04,338 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 273 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:04,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 254 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:21:04,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-12-02 14:21:04,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 96. [2024-12-02 14:21:04,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 79 states have (on average 1.3164556962025316) internal successors, (104), 79 states have internal predecessors, (104), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-12-02 14:21:04,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 134 transitions. [2024-12-02 14:21:04,353 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 134 transitions. Word has length 116 [2024-12-02 14:21:04,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:04,353 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 134 transitions. [2024-12-02 14:21:04,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-12-02 14:21:04,353 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 134 transitions. [2024-12-02 14:21:04,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 14:21:04,355 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:04,355 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:04,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:21:04,356 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:04,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:04,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1727925920, now seen corresponding path program 1 times [2024-12-02 14:21:04,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:04,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959005591] [2024-12-02 14:21:04,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:04,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-12-02 14:21:05,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:05,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959005591] [2024-12-02 14:21:05,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959005591] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:05,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:21:05,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:21:05,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357810820] [2024-12-02 14:21:05,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:05,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:21:05,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:05,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:21:05,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:21:05,368 INFO L87 Difference]: Start difference. First operand 96 states and 134 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-12-02 14:21:05,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:05,773 INFO L93 Difference]: Finished difference Result 232 states and 323 transitions. [2024-12-02 14:21:05,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:21:05,773 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 116 [2024-12-02 14:21:05,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:05,775 INFO L225 Difference]: With dead ends: 232 [2024-12-02 14:21:05,775 INFO L226 Difference]: Without dead ends: 139 [2024-12-02 14:21:05,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:21:05,776 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 230 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:05,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 411 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:21:05,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-12-02 14:21:05,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 110. [2024-12-02 14:21:05,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 93 states have (on average 1.3225806451612903) internal successors, (123), 93 states have internal predecessors, (123), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-12-02 14:21:05,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 153 transitions. [2024-12-02 14:21:05,792 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 153 transitions. Word has length 116 [2024-12-02 14:21:05,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:05,793 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 153 transitions. [2024-12-02 14:21:05,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-12-02 14:21:05,793 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 153 transitions. [2024-12-02 14:21:05,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 14:21:05,794 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:05,794 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:05,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:21:05,795 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:05,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:05,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1469760482, now seen corresponding path program 1 times [2024-12-02 14:21:05,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:05,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128745894] [2024-12-02 14:21:05,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:05,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:10,987 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-12-02 14:21:10,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:10,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128745894] [2024-12-02 14:21:10,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128745894] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:10,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:21:10,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 14:21:10,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098305922] [2024-12-02 14:21:10,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:10,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 14:21:10,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:10,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 14:21:10,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:21:10,989 INFO L87 Difference]: Start difference. First operand 110 states and 153 transitions. Second operand has 13 states, 10 states have (on average 4.4) internal successors, (44), 13 states have internal predecessors, (44), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 6 states have call successors, (15) [2024-12-02 14:21:12,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:12,404 INFO L93 Difference]: Finished difference Result 251 states and 346 transitions. [2024-12-02 14:21:12,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:21:12,405 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 4.4) internal successors, (44), 13 states have internal predecessors, (44), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 6 states have call successors, (15) Word has length 116 [2024-12-02 14:21:12,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:12,406 INFO L225 Difference]: With dead ends: 251 [2024-12-02 14:21:12,406 INFO L226 Difference]: Without dead ends: 144 [2024-12-02 14:21:12,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-12-02 14:21:12,408 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 184 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:12,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 374 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 14:21:12,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-12-02 14:21:12,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2024-12-02 14:21:12,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 121 states have (on average 1.3140495867768596) internal successors, (159), 122 states have internal predecessors, (159), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 14:21:12,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 193 transitions. [2024-12-02 14:21:12,432 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 193 transitions. Word has length 116 [2024-12-02 14:21:12,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:12,433 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 193 transitions. [2024-12-02 14:21:12,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 4.4) internal successors, (44), 13 states have internal predecessors, (44), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 6 states have call successors, (15) [2024-12-02 14:21:12,433 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 193 transitions. [2024-12-02 14:21:12,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 14:21:12,434 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:12,434 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:12,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:21:12,435 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:12,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:12,435 INFO L85 PathProgramCache]: Analyzing trace with hash 978693474, now seen corresponding path program 1 times [2024-12-02 14:21:12,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:12,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381209339] [2024-12-02 14:21:12,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:12,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-12-02 14:21:16,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:16,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381209339] [2024-12-02 14:21:16,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381209339] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:16,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:21:16,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 14:21:16,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845434054] [2024-12-02 14:21:16,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:16,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 14:21:16,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:16,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 14:21:16,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:21:16,632 INFO L87 Difference]: Start difference. First operand 141 states and 193 transitions. Second operand has 13 states, 10 states have (on average 4.4) internal successors, (44), 13 states have internal predecessors, (44), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 6 states have call successors, (15) [2024-12-02 14:21:18,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:18,130 INFO L93 Difference]: Finished difference Result 317 states and 432 transitions. [2024-12-02 14:21:18,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:21:18,131 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 4.4) internal successors, (44), 13 states have internal predecessors, (44), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 6 states have call successors, (15) Word has length 116 [2024-12-02 14:21:18,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:18,134 INFO L225 Difference]: With dead ends: 317 [2024-12-02 14:21:18,134 INFO L226 Difference]: Without dead ends: 179 [2024-12-02 14:21:18,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-12-02 14:21:18,135 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 164 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:18,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 400 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 14:21:18,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-12-02 14:21:18,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 145. [2024-12-02 14:21:18,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 125 states have (on average 1.312) internal successors, (164), 126 states have internal predecessors, (164), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 14:21:18,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 198 transitions. [2024-12-02 14:21:18,162 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 198 transitions. Word has length 116 [2024-12-02 14:21:18,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:18,162 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 198 transitions. [2024-12-02 14:21:18,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 4.4) internal successors, (44), 13 states have internal predecessors, (44), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 6 states have call successors, (15) [2024-12-02 14:21:18,162 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 198 transitions. [2024-12-02 14:21:18,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 14:21:18,164 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:18,164 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:18,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:21:18,164 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:18,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:18,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1236858912, now seen corresponding path program 1 times [2024-12-02 14:21:18,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:18,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611586396] [2024-12-02 14:21:18,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:18,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:19,665 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-12-02 14:21:19,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:19,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611586396] [2024-12-02 14:21:19,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611586396] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:19,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:21:19,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 14:21:19,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782138300] [2024-12-02 14:21:19,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:19,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 14:21:19,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:19,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 14:21:19,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:21:19,667 INFO L87 Difference]: Start difference. First operand 145 states and 198 transitions. Second operand has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 14:21:20,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:20,478 INFO L93 Difference]: Finished difference Result 313 states and 427 transitions. [2024-12-02 14:21:20,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:21:20,478 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 116 [2024-12-02 14:21:20,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:20,480 INFO L225 Difference]: With dead ends: 313 [2024-12-02 14:21:20,480 INFO L226 Difference]: Without dead ends: 171 [2024-12-02 14:21:20,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2024-12-02 14:21:20,481 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 339 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:20,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 480 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:21:20,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-12-02 14:21:20,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 142. [2024-12-02 14:21:20,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 122 states have (on average 1.3114754098360655) internal successors, (160), 123 states have internal predecessors, (160), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 14:21:20,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 194 transitions. [2024-12-02 14:21:20,499 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 194 transitions. Word has length 116 [2024-12-02 14:21:20,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:20,499 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 194 transitions. [2024-12-02 14:21:20,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 14:21:20,500 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 194 transitions. [2024-12-02 14:21:20,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 14:21:20,500 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:20,500 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:20,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:21:20,501 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:20,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:20,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1225741899, now seen corresponding path program 1 times [2024-12-02 14:21:20,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:20,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831360165] [2024-12-02 14:21:20,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:20,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-12-02 14:21:21,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:21,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831360165] [2024-12-02 14:21:21,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831360165] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:21,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:21:21,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 14:21:21,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890828113] [2024-12-02 14:21:21,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:21,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 14:21:21,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:21,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 14:21:21,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:21:21,368 INFO L87 Difference]: Start difference. First operand 142 states and 194 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-12-02 14:21:22,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:22,148 INFO L93 Difference]: Finished difference Result 354 states and 484 transitions. [2024-12-02 14:21:22,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:21:22,149 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 117 [2024-12-02 14:21:22,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:22,151 INFO L225 Difference]: With dead ends: 354 [2024-12-02 14:21:22,151 INFO L226 Difference]: Without dead ends: 215 [2024-12-02 14:21:22,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-12-02 14:21:22,151 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 185 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:22,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 672 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:21:22,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-12-02 14:21:22,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 157. [2024-12-02 14:21:22,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 137 states have (on average 1.3211678832116789) internal successors, (181), 138 states have internal predecessors, (181), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 14:21:22,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 215 transitions. [2024-12-02 14:21:22,174 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 215 transitions. Word has length 117 [2024-12-02 14:21:22,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:22,175 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 215 transitions. [2024-12-02 14:21:22,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-12-02 14:21:22,175 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 215 transitions. [2024-12-02 14:21:22,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 14:21:22,176 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:22,176 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:22,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 14:21:22,177 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:22,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:22,177 INFO L85 PathProgramCache]: Analyzing trace with hash -967576461, now seen corresponding path program 1 times [2024-12-02 14:21:22,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:22,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420418242] [2024-12-02 14:21:22,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:22,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-12-02 14:21:25,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:25,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420418242] [2024-12-02 14:21:25,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420418242] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:25,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:21:25,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 14:21:25,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782022305] [2024-12-02 14:21:25,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:25,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 14:21:25,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:25,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 14:21:25,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:21:25,212 INFO L87 Difference]: Start difference. First operand 157 states and 215 transitions. Second operand has 14 states, 12 states have (on average 3.75) internal successors, (45), 14 states have internal predecessors, (45), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 4 states have call predecessors, (15), 6 states have call successors, (15) [2024-12-02 14:21:26,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:26,232 INFO L93 Difference]: Finished difference Result 343 states and 469 transitions. [2024-12-02 14:21:26,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:21:26,232 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 14 states have internal predecessors, (45), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 4 states have call predecessors, (15), 6 states have call successors, (15) Word has length 117 [2024-12-02 14:21:26,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:26,233 INFO L225 Difference]: With dead ends: 343 [2024-12-02 14:21:26,233 INFO L226 Difference]: Without dead ends: 189 [2024-12-02 14:21:26,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:21:26,234 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 360 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:26,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 306 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 14:21:26,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-12-02 14:21:26,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 157. [2024-12-02 14:21:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 137 states have (on average 1.313868613138686) internal successors, (180), 138 states have internal predecessors, (180), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 14:21:26,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 214 transitions. [2024-12-02 14:21:26,260 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 214 transitions. Word has length 117 [2024-12-02 14:21:26,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:26,260 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 214 transitions. [2024-12-02 14:21:26,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 14 states have internal predecessors, (45), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 4 states have call predecessors, (15), 6 states have call successors, (15) [2024-12-02 14:21:26,261 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 214 transitions. [2024-12-02 14:21:26,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 14:21:26,261 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:26,262 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:26,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 14:21:26,262 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:26,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:26,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1697317538, now seen corresponding path program 1 times [2024-12-02 14:21:26,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:26,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933493002] [2024-12-02 14:21:26,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:26,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-12-02 14:21:26,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:26,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933493002] [2024-12-02 14:21:26,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933493002] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:26,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:21:26,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:21:26,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517428404] [2024-12-02 14:21:26,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:26,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:21:26,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:26,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:21:26,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:21:26,782 INFO L87 Difference]: Start difference. First operand 157 states and 214 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-12-02 14:21:27,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:27,162 INFO L93 Difference]: Finished difference Result 313 states and 425 transitions. [2024-12-02 14:21:27,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:21:27,163 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 117 [2024-12-02 14:21:27,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:27,164 INFO L225 Difference]: With dead ends: 313 [2024-12-02 14:21:27,164 INFO L226 Difference]: Without dead ends: 159 [2024-12-02 14:21:27,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:21:27,165 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 194 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:27,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 292 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:21:27,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-12-02 14:21:27,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2024-12-02 14:21:27,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 135 states have (on average 1.2962962962962963) internal successors, (175), 136 states have internal predecessors, (175), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 14:21:27,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 209 transitions. [2024-12-02 14:21:27,183 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 209 transitions. Word has length 117 [2024-12-02 14:21:27,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:27,183 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 209 transitions. [2024-12-02 14:21:27,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-12-02 14:21:27,183 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 209 transitions. [2024-12-02 14:21:27,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 14:21:27,184 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:27,184 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:27,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 14:21:27,184 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:27,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:27,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1075080691, now seen corresponding path program 1 times [2024-12-02 14:21:27,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:27,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916479975] [2024-12-02 14:21:27,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:27,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:28,788 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-12-02 14:21:28,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:28,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916479975] [2024-12-02 14:21:28,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916479975] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:28,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:21:28,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 14:21:28,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295046293] [2024-12-02 14:21:28,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:28,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 14:21:28,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:28,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 14:21:28,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:21:28,790 INFO L87 Difference]: Start difference. First operand 155 states and 209 transitions. Second operand has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 14:21:29,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:29,391 INFO L93 Difference]: Finished difference Result 333 states and 449 transitions. [2024-12-02 14:21:29,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:21:29,392 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 117 [2024-12-02 14:21:29,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:29,393 INFO L225 Difference]: With dead ends: 333 [2024-12-02 14:21:29,393 INFO L226 Difference]: Without dead ends: 181 [2024-12-02 14:21:29,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:21:29,394 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 275 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:29,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 247 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:21:29,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-12-02 14:21:29,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 155. [2024-12-02 14:21:29,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 135 states have (on average 1.288888888888889) internal successors, (174), 136 states have internal predecessors, (174), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 14:21:29,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 208 transitions. [2024-12-02 14:21:29,412 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 208 transitions. Word has length 117 [2024-12-02 14:21:29,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:29,413 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 208 transitions. [2024-12-02 14:21:29,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 14:21:29,413 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 208 transitions. [2024-12-02 14:21:29,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 14:21:29,414 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:29,414 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:29,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 14:21:29,414 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:29,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:29,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1333246129, now seen corresponding path program 1 times [2024-12-02 14:21:29,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:29,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368611065] [2024-12-02 14:21:29,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:29,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:30,593 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-12-02 14:21:30,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:30,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368611065] [2024-12-02 14:21:30,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368611065] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:30,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:21:30,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 14:21:30,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466450131] [2024-12-02 14:21:30,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:30,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 14:21:30,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:30,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 14:21:30,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:21:30,594 INFO L87 Difference]: Start difference. First operand 155 states and 208 transitions. Second operand has 18 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 14:21:31,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:31,904 INFO L93 Difference]: Finished difference Result 333 states and 447 transitions. [2024-12-02 14:21:31,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 14:21:31,905 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 117 [2024-12-02 14:21:31,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:31,907 INFO L225 Difference]: With dead ends: 333 [2024-12-02 14:21:31,907 INFO L226 Difference]: Without dead ends: 181 [2024-12-02 14:21:31,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2024-12-02 14:21:31,908 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 200 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:31,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 819 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 14:21:31,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-12-02 14:21:31,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 152. [2024-12-02 14:21:31,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 132 states have (on average 1.2878787878787878) internal successors, (170), 133 states have internal predecessors, (170), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 14:21:31,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 204 transitions. [2024-12-02 14:21:31,938 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 204 transitions. Word has length 117 [2024-12-02 14:21:31,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:31,938 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 204 transitions. [2024-12-02 14:21:31,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 14:21:31,938 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 204 transitions. [2024-12-02 14:21:31,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 14:21:31,939 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:31,939 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:31,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 14:21:31,939 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:31,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:31,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1245925263, now seen corresponding path program 1 times [2024-12-02 14:21:31,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:31,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604182410] [2024-12-02 14:21:31,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:31,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-12-02 14:21:32,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:32,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604182410] [2024-12-02 14:21:32,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604182410] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:32,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:21:32,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 14:21:32,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292634985] [2024-12-02 14:21:32,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:32,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 14:21:32,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:32,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 14:21:32,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:21:32,986 INFO L87 Difference]: Start difference. First operand 152 states and 204 transitions. Second operand has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 14:21:33,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:33,642 INFO L93 Difference]: Finished difference Result 375 states and 498 transitions. [2024-12-02 14:21:33,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:21:33,643 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 118 [2024-12-02 14:21:33,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:33,644 INFO L225 Difference]: With dead ends: 375 [2024-12-02 14:21:33,644 INFO L226 Difference]: Without dead ends: 226 [2024-12-02 14:21:33,644 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2024-12-02 14:21:33,645 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 349 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:33,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 389 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:21:33,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-12-02 14:21:33,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 178. [2024-12-02 14:21:33,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 158 states have (on average 1.2531645569620253) internal successors, (198), 159 states have internal predecessors, (198), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 14:21:33,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 232 transitions. [2024-12-02 14:21:33,662 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 232 transitions. Word has length 118 [2024-12-02 14:21:33,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:33,663 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 232 transitions. [2024-12-02 14:21:33,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 14:21:33,663 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 232 transitions. [2024-12-02 14:21:33,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 14:21:33,664 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:33,664 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:33,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 14:21:33,665 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:33,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:33,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1144824846, now seen corresponding path program 1 times [2024-12-02 14:21:33,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:33,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384616985] [2024-12-02 14:21:33,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:33,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-12-02 14:21:38,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:38,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384616985] [2024-12-02 14:21:38,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384616985] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:38,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:21:38,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 14:21:38,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006921422] [2024-12-02 14:21:38,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:38,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 14:21:38,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:38,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 14:21:38,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-12-02 14:21:38,555 INFO L87 Difference]: Start difference. First operand 178 states and 232 transitions. Second operand has 16 states, 14 states have (on average 3.357142857142857) internal successors, (47), 16 states have internal predecessors, (47), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 5 states have call successors, (15) [2024-12-02 14:21:50,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-12-02 14:21:51,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:51,574 INFO L93 Difference]: Finished difference Result 405 states and 527 transitions. [2024-12-02 14:21:51,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 14:21:51,575 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.357142857142857) internal successors, (47), 16 states have internal predecessors, (47), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 5 states have call successors, (15) Word has length 119 [2024-12-02 14:21:51,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:51,576 INFO L225 Difference]: With dead ends: 405 [2024-12-02 14:21:51,576 INFO L226 Difference]: Without dead ends: 230 [2024-12-02 14:21:51,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2024-12-02 14:21:51,578 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 342 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:51,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 428 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 710 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2024-12-02 14:21:51,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-12-02 14:21:51,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 178. [2024-12-02 14:21:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 158 states have (on average 1.240506329113924) internal successors, (196), 159 states have internal predecessors, (196), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 14:21:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 230 transitions. [2024-12-02 14:21:51,610 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 230 transitions. Word has length 119 [2024-12-02 14:21:51,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:51,610 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 230 transitions. [2024-12-02 14:21:51,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.357142857142857) internal successors, (47), 16 states have internal predecessors, (47), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 5 states have call successors, (15) [2024-12-02 14:21:51,611 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 230 transitions. [2024-12-02 14:21:51,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-02 14:21:51,611 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:51,611 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:51,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 14:21:51,612 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:51,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:51,612 INFO L85 PathProgramCache]: Analyzing trace with hash -612352598, now seen corresponding path program 1 times [2024-12-02 14:21:51,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:51,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633022737] [2024-12-02 14:21:51,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:51,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:52,991 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-12-02 14:21:52,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:52,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633022737] [2024-12-02 14:21:52,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633022737] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:52,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:21:52,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 14:21:52,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266379948] [2024-12-02 14:21:52,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:52,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 14:21:52,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:52,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 14:21:52,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:21:52,993 INFO L87 Difference]: Start difference. First operand 178 states and 230 transitions. Second operand has 13 states, 12 states have (on average 4.0) internal successors, (48), 13 states have internal predecessors, (48), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 14:21:53,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:53,517 INFO L93 Difference]: Finished difference Result 188 states and 241 transitions. [2024-12-02 14:21:53,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:21:53,518 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.0) internal successors, (48), 13 states have internal predecessors, (48), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 120 [2024-12-02 14:21:53,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:53,519 INFO L225 Difference]: With dead ends: 188 [2024-12-02 14:21:53,519 INFO L226 Difference]: Without dead ends: 186 [2024-12-02 14:21:53,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:21:53,519 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 260 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:53,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 282 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:21:53,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-12-02 14:21:53,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2024-12-02 14:21:53,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 164 states have (on average 1.2317073170731707) internal successors, (202), 165 states have internal predecessors, (202), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 14:21:53,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 236 transitions. [2024-12-02 14:21:53,538 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 236 transitions. Word has length 120 [2024-12-02 14:21:53,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:53,538 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 236 transitions. [2024-12-02 14:21:53,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.0) internal successors, (48), 13 states have internal predecessors, (48), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 14:21:53,538 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 236 transitions. [2024-12-02 14:21:53,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-02 14:21:53,539 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:53,539 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:53,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 14:21:53,539 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:53,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:53,540 INFO L85 PathProgramCache]: Analyzing trace with hash -610505556, now seen corresponding path program 1 times [2024-12-02 14:21:53,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:53,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240740088] [2024-12-02 14:21:53,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:53,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat