./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_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_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/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_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-58.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/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_986249b6-2113-4c1e-8028-1728e8a7457f/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 47d9c6f35709a52125d621eba0ec18ad6da014805bad20f4d26ed2a4fcb7a8f5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:22:15,027 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:22:15,083 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 11:22:15,087 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:22:15,087 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:22:15,108 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:22:15,108 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:22:15,109 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:22:15,109 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:22:15,109 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:22:15,109 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:22:15,109 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:22:15,109 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:22:15,110 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:22:15,110 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:22:15,110 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:22:15,110 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:22:15,110 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:22:15,110 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:22:15,110 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:22:15,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:22:15,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:22:15,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:22:15,111 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:22:15,111 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:22:15,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:22:15,111 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:22:15,111 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:22:15,111 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:22:15,111 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:22:15,111 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:22:15,111 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:22:15,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:22:15,112 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:22:15,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:22:15,112 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:22:15,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:22:15,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:22:15,112 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:22:15,112 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:22:15,112 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:22:15,112 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:22:15,112 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:22:15,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:22:15,113 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:22:15,113 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:22:15,113 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:22:15,113 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:22:15,113 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_986249b6-2113-4c1e-8028-1728e8a7457f/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 -> 47d9c6f35709a52125d621eba0ec18ad6da014805bad20f4d26ed2a4fcb7a8f5 [2024-12-02 11:22:15,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:22:15,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:22:15,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:22:15,330 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:22:15,331 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:22:15,332 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-58.i [2024-12-02 11:22:18,035 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/data/23a725473/77e20c1fd49647ae976ea8fdcab6fab0/FLAGfe97896f3 [2024-12-02 11:22:18,251 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:22:18,252 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-58.i [2024-12-02 11:22:18,259 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/data/23a725473/77e20c1fd49647ae976ea8fdcab6fab0/FLAGfe97896f3 [2024-12-02 11:22:18,275 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/data/23a725473/77e20c1fd49647ae976ea8fdcab6fab0 [2024-12-02 11:22:18,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:22:18,279 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:22:18,280 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:22:18,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:22:18,284 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:22:18,285 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:22:18" (1/1) ... [2024-12-02 11:22:18,285 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e86d121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:18, skipping insertion in model container [2024-12-02 11:22:18,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:22:18" (1/1) ... [2024-12-02 11:22:18,301 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:22:18,409 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_986249b6-2113-4c1e-8028-1728e8a7457f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-58.i[916,929] [2024-12-02 11:22:18,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:22:18,467 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:22:18,475 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_986249b6-2113-4c1e-8028-1728e8a7457f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-58.i[916,929] [2024-12-02 11:22:18,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:22:18,527 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:22:18,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:18 WrapperNode [2024-12-02 11:22:18,527 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:22:18,528 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:22:18,528 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:22:18,528 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:22:18,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:18" (1/1) ... [2024-12-02 11:22:18,547 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:18" (1/1) ... [2024-12-02 11:22:18,584 INFO L138 Inliner]: procedures = 27, calls = 152, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 436 [2024-12-02 11:22:18,585 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:22:18,585 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:22:18,586 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:22:18,586 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:22:18,592 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:18" (1/1) ... [2024-12-02 11:22:18,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:18" (1/1) ... [2024-12-02 11:22:18,598 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:18" (1/1) ... [2024-12-02 11:22:18,617 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 11:22:18,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:18" (1/1) ... [2024-12-02 11:22:18,618 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:18" (1/1) ... [2024-12-02 11:22:18,636 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:18" (1/1) ... [2024-12-02 11:22:18,638 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:18" (1/1) ... [2024-12-02 11:22:18,642 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:18" (1/1) ... [2024-12-02 11:22:18,645 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:18" (1/1) ... [2024-12-02 11:22:18,647 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:18" (1/1) ... [2024-12-02 11:22:18,653 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:22:18,654 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:22:18,654 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:22:18,654 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:22:18,655 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:18" (1/1) ... [2024-12-02 11:22:18,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:22:18,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:22:18,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:22:18,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:22:18,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:22:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 11:22:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 11:22:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 11:22:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 11:22:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 11:22:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 11:22:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 11:22:18,710 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 11:22:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:22:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 11:22:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:22:18,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:22:18,799 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:22:18,801 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:22:19,210 INFO L? ?]: Removed 126 outVars from TransFormulas that were not future-live. [2024-12-02 11:22:19,210 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:22:19,222 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:22:19,222 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 11:22:19,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:22:19 BoogieIcfgContainer [2024-12-02 11:22:19,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:22:19,225 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:22:19,225 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:22:19,230 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:22:19,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:22:18" (1/3) ... [2024-12-02 11:22:19,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf3ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:22:19, skipping insertion in model container [2024-12-02 11:22:19,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:22:18" (2/3) ... [2024-12-02 11:22:19,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf3ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:22:19, skipping insertion in model container [2024-12-02 11:22:19,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:22:19" (3/3) ... [2024-12-02 11:22:19,232 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-58.i [2024-12-02 11:22:19,248 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:22:19,249 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-s_file-58.i that has 2 procedures, 92 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 11:22:19,296 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:22:19,308 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;@4efc858e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:22:19,308 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:22:19,312 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 11:22:19,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 11:22:19,322 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:19,323 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 11:22:19,324 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:19,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:19,329 INFO L85 PathProgramCache]: Analyzing trace with hash -773362153, now seen corresponding path program 1 times [2024-12-02 11:22:19,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:19,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254377816] [2024-12-02 11:22:19,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:19,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:19,591 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 11:22:19,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:19,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254377816] [2024-12-02 11:22:19,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254377816] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:22:19,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317211089] [2024-12-02 11:22:19,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:19,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:22:19,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:22:19,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:22:19,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:22:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:19,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 11:22:19,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:22:19,794 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 11:22:19,794 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:22:19,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317211089] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:22:19,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:22:19,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 11:22:19,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992308232] [2024-12-02 11:22:19,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:22:19,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 11:22:19,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:22:19,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 11:22:19,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:22:19,817 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 11:22:19,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:19,840 INFO L93 Difference]: Finished difference Result 173 states and 269 transitions. [2024-12-02 11:22:19,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 11:22:19,841 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 11:22:19,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:19,848 INFO L225 Difference]: With dead ends: 173 [2024-12-02 11:22:19,848 INFO L226 Difference]: Without dead ends: 84 [2024-12-02 11:22:19,851 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 11:22:19,854 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 11:22:19,854 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 11:22:19,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-12-02 11:22:19,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-12-02 11:22:19,881 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 11:22:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 118 transitions. [2024-12-02 11:22:19,887 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 118 transitions. Word has length 116 [2024-12-02 11:22:19,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:19,887 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 118 transitions. [2024-12-02 11:22:19,887 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 11:22:19,887 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 118 transitions. [2024-12-02 11:22:19,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 11:22:19,890 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:19,890 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 11:22:19,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:22:20,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 11:22:20,091 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:20,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:20,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1258197323, now seen corresponding path program 1 times [2024-12-02 11:22:20,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:20,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136651161] [2024-12-02 11:22:20,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:20,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:20,364 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 11:22:20,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:20,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136651161] [2024-12-02 11:22:20,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136651161] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:22:20,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:22:20,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:22:20,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322445370] [2024-12-02 11:22:20,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:22:20,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:22:20,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:22:20,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:22:20,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:22:20,367 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 11:22:20,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:20,411 INFO L93 Difference]: Finished difference Result 168 states and 237 transitions. [2024-12-02 11:22:20,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:22:20,412 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 11:22:20,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:20,414 INFO L225 Difference]: With dead ends: 168 [2024-12-02 11:22:20,414 INFO L226 Difference]: Without dead ends: 87 [2024-12-02 11:22:20,415 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 11:22:20,416 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 11:22:20,416 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 11:22:20,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-12-02 11:22:20,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2024-12-02 11:22:20,425 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 11:22:20,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions. [2024-12-02 11:22:20,427 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 120 transitions. Word has length 116 [2024-12-02 11:22:20,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:20,428 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 120 transitions. [2024-12-02 11:22:20,428 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 11:22:20,429 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 120 transitions. [2024-12-02 11:22:20,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 11:22:20,430 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:20,430 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 11:22:20,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:22:20,431 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:20,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:20,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1256350281, now seen corresponding path program 1 times [2024-12-02 11:22:20,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:20,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821816108] [2024-12-02 11:22:20,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:20,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:21,644 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 11:22:21,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:21,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821816108] [2024-12-02 11:22:21,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821816108] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:22:21,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:22:21,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:22:21,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640518957] [2024-12-02 11:22:21,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:22:21,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:22:21,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:22:21,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:22:21,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:22:21,646 INFO L87 Difference]: Start difference. First operand 86 states and 120 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (15), 1 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 11:22:22,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:22,532 INFO L93 Difference]: Finished difference Result 249 states and 349 transitions. [2024-12-02 11:22:22,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:22:22,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (15), 1 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 11:22:22,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:22,536 INFO L225 Difference]: With dead ends: 249 [2024-12-02 11:22:22,536 INFO L226 Difference]: Without dead ends: 166 [2024-12-02 11:22:22,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:22:22,538 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 93 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 11:22:22,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 421 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 11:22:22,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-12-02 11:22:22,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2024-12-02 11:22:22,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 131 states have (on average 1.297709923664122) internal successors, (170), 131 states have internal predecessors, (170), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-12-02 11:22:22,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 230 transitions. [2024-12-02 11:22:22,560 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 230 transitions. Word has length 116 [2024-12-02 11:22:22,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:22,561 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 230 transitions. [2024-12-02 11:22:22,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (15), 1 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 11:22:22,561 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 230 transitions. [2024-12-02 11:22:22,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 11:22:22,564 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:22,564 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 11:22:22,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 11:22:22,564 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:22,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:22,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1727925920, now seen corresponding path program 1 times [2024-12-02 11:22:22,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:22,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587323429] [2024-12-02 11:22:22,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:22,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:24,048 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 11:22:24,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:24,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587323429] [2024-12-02 11:22:24,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587323429] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:22:24,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:22:24,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 11:22:24,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336081585] [2024-12-02 11:22:24,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:22:24,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:22:24,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:22:24,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:22:24,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:22:24,051 INFO L87 Difference]: Start difference. First operand 164 states and 230 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (15), 1 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 11:22:24,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:24,395 INFO L93 Difference]: Finished difference Result 368 states and 515 transitions. [2024-12-02 11:22:24,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:22:24,396 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (15), 1 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 11:22:24,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:24,398 INFO L225 Difference]: With dead ends: 368 [2024-12-02 11:22:24,398 INFO L226 Difference]: Without dead ends: 207 [2024-12-02 11:22:24,399 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:22:24,399 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 48 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:22:24,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 536 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:22:24,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-12-02 11:22:24,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 178. [2024-12-02 11:22:24,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 145 states have (on average 1.303448275862069) internal successors, (189), 145 states have internal predecessors, (189), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-12-02 11:22:24,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 249 transitions. [2024-12-02 11:22:24,417 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 249 transitions. Word has length 116 [2024-12-02 11:22:24,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:24,418 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 249 transitions. [2024-12-02 11:22:24,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (15), 1 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 11:22:24,418 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 249 transitions. [2024-12-02 11:22:24,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 11:22:24,420 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:24,420 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 11:22:24,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 11:22:24,420 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:24,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:24,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1469760482, now seen corresponding path program 1 times [2024-12-02 11:22:24,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:24,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383705640] [2024-12-02 11:22:24,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:24,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:26,108 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 11:22:26,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:26,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383705640] [2024-12-02 11:22:26,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383705640] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:22:26,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:22:26,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 11:22:26,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513890508] [2024-12-02 11:22:26,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:22:26,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 11:22:26,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:22:26,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 11:22:26,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:22:26,110 INFO L87 Difference]: Start difference. First operand 178 states and 249 transitions. Second operand has 9 states, 6 states have (on average 7.333333333333333) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 11:22:26,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:26,804 INFO L93 Difference]: Finished difference Result 406 states and 562 transitions. [2024-12-02 11:22:26,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:22:26,805 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 7.333333333333333) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) Word has length 116 [2024-12-02 11:22:26,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:26,807 INFO L225 Difference]: With dead ends: 406 [2024-12-02 11:22:26,807 INFO L226 Difference]: Without dead ends: 231 [2024-12-02 11:22:26,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:22:26,808 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 67 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:22:26,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 548 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:22:26,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-12-02 11:22:26,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 218. [2024-12-02 11:22:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 179 states have (on average 1.2905027932960893) internal successors, (231), 181 states have internal predecessors, (231), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2024-12-02 11:22:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 299 transitions. [2024-12-02 11:22:26,827 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 299 transitions. Word has length 116 [2024-12-02 11:22:26,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:26,828 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 299 transitions. [2024-12-02 11:22:26,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 7.333333333333333) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 11:22:26,828 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 299 transitions. [2024-12-02 11:22:26,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 11:22:26,830 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:26,830 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 11:22:26,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 11:22:26,830 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:26,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:26,831 INFO L85 PathProgramCache]: Analyzing trace with hash 978693474, now seen corresponding path program 1 times [2024-12-02 11:22:26,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:26,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338285246] [2024-12-02 11:22:26,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:26,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:28,215 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 11:22:28,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:28,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338285246] [2024-12-02 11:22:28,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338285246] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:22:28,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:22:28,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 11:22:28,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787254585] [2024-12-02 11:22:28,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:22:28,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 11:22:28,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:22:28,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 11:22:28,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:22:28,218 INFO L87 Difference]: Start difference. First operand 218 states and 299 transitions. Second operand has 9 states, 6 states have (on average 7.333333333333333) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 11:22:28,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:28,949 INFO L93 Difference]: Finished difference Result 472 states and 648 transitions. [2024-12-02 11:22:28,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:22:28,949 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 7.333333333333333) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) Word has length 116 [2024-12-02 11:22:28,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:28,953 INFO L225 Difference]: With dead ends: 472 [2024-12-02 11:22:28,953 INFO L226 Difference]: Without dead ends: 266 [2024-12-02 11:22:28,953 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:22:28,954 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 66 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:22:28,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 626 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:22:28,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-12-02 11:22:28,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 232. [2024-12-02 11:22:28,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 193 states have (on average 1.2953367875647668) internal successors, (250), 195 states have internal predecessors, (250), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2024-12-02 11:22:28,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 318 transitions. [2024-12-02 11:22:28,974 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 318 transitions. Word has length 116 [2024-12-02 11:22:28,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:28,974 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 318 transitions. [2024-12-02 11:22:28,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 7.333333333333333) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 11:22:28,975 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 318 transitions. [2024-12-02 11:22:28,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 11:22:28,976 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:28,976 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 11:22:28,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 11:22:28,976 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:28,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:28,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1236858912, now seen corresponding path program 1 times [2024-12-02 11:22:28,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:28,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502858649] [2024-12-02 11:22:28,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:28,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:29,881 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 11:22:29,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:29,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502858649] [2024-12-02 11:22:29,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502858649] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:22:29,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:22:29,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 11:22:29,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524240743] [2024-12-02 11:22:29,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:22:29,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:22:29,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:22:29,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:22:29,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:22:29,883 INFO L87 Difference]: Start difference. First operand 232 states and 318 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (15), 1 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 11:22:30,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:30,478 INFO L93 Difference]: Finished difference Result 498 states and 681 transitions. [2024-12-02 11:22:30,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:22:30,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (15), 1 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 11:22:30,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:30,481 INFO L225 Difference]: With dead ends: 498 [2024-12-02 11:22:30,481 INFO L226 Difference]: Without dead ends: 278 [2024-12-02 11:22:30,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:22:30,482 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 61 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:22:30,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 787 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 11:22:30,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-12-02 11:22:30,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 275. [2024-12-02 11:22:30,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 228 states have (on average 1.2850877192982457) internal successors, (293), 231 states have internal predecessors, (293), 40 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 11:22:30,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 373 transitions. [2024-12-02 11:22:30,509 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 373 transitions. Word has length 116 [2024-12-02 11:22:30,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:30,509 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 373 transitions. [2024-12-02 11:22:30,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (15), 1 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 11:22:30,509 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 373 transitions. [2024-12-02 11:22:30,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 11:22:30,511 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:30,511 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 11:22:30,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 11:22:30,511 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:30,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:30,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1225741899, now seen corresponding path program 1 times [2024-12-02 11:22:30,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:30,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114816963] [2024-12-02 11:22:30,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:30,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:31,437 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 11:22:31,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:31,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114816963] [2024-12-02 11:22:31,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114816963] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:22:31,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:22:31,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 11:22:31,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893813855] [2024-12-02 11:22:31,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:22:31,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 11:22:31,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:22:31,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 11:22:31,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:22:31,439 INFO L87 Difference]: Start difference. First operand 275 states and 373 transitions. Second operand has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 2 states have call successors, (15), 1 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 11:22:31,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:31,950 INFO L93 Difference]: Finished difference Result 623 states and 850 transitions. [2024-12-02 11:22:31,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 11:22:31,951 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 2 states have call successors, (15), 1 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 117 [2024-12-02 11:22:31,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:31,952 INFO L225 Difference]: With dead ends: 623 [2024-12-02 11:22:31,953 INFO L226 Difference]: Without dead ends: 360 [2024-12-02 11:22:31,953 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-12-02 11:22:31,954 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 51 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:22:31,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 847 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:22:31,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-12-02 11:22:31,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 290. [2024-12-02 11:22:31,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 243 states have (on average 1.2921810699588476) internal successors, (314), 246 states have internal predecessors, (314), 40 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 11:22:31,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 394 transitions. [2024-12-02 11:22:31,976 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 394 transitions. Word has length 117 [2024-12-02 11:22:31,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:31,976 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 394 transitions. [2024-12-02 11:22:31,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 2 states have call successors, (15), 1 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 11:22:31,977 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 394 transitions. [2024-12-02 11:22:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 11:22:31,978 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:31,978 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 11:22:31,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 11:22:31,978 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:31,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:31,979 INFO L85 PathProgramCache]: Analyzing trace with hash -967576461, now seen corresponding path program 1 times [2024-12-02 11:22:31,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:31,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744358189] [2024-12-02 11:22:31,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:31,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:32,840 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 11:22:32,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:32,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744358189] [2024-12-02 11:22:32,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744358189] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:22:32,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:22:32,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:22:32,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252223647] [2024-12-02 11:22:32,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:22:32,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:22:32,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:22:32,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:22:32,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:22:32,842 INFO L87 Difference]: Start difference. First operand 290 states and 394 transitions. Second operand has 7 states, 5 states have (on average 9.0) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 11:22:33,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:33,266 INFO L93 Difference]: Finished difference Result 637 states and 869 transitions. [2024-12-02 11:22:33,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:22:33,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.0) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 3 states have call successors, (15) Word has length 117 [2024-12-02 11:22:33,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:33,270 INFO L225 Difference]: With dead ends: 637 [2024-12-02 11:22:33,270 INFO L226 Difference]: Without dead ends: 359 [2024-12-02 11:22:33,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:22:33,272 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 51 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:22:33,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 472 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:22:33,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-12-02 11:22:33,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 290. [2024-12-02 11:22:33,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 243 states have (on average 1.2880658436213992) internal successors, (313), 246 states have internal predecessors, (313), 40 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 11:22:33,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 393 transitions. [2024-12-02 11:22:33,301 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 393 transitions. Word has length 117 [2024-12-02 11:22:33,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:33,302 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 393 transitions. [2024-12-02 11:22:33,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.0) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 11:22:33,302 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 393 transitions. [2024-12-02 11:22:33,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 11:22:33,303 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:33,304 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 11:22:33,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 11:22:33,304 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:33,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:33,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1697317538, now seen corresponding path program 1 times [2024-12-02 11:22:33,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:33,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645974801] [2024-12-02 11:22:33,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:33,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:33,574 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 11:22:33,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:33,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645974801] [2024-12-02 11:22:33,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645974801] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:22:33,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:22:33,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:22:33,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543912558] [2024-12-02 11:22:33,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:22:33,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:22:33,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:22:33,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:22:33,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:22:33,576 INFO L87 Difference]: Start difference. First operand 290 states and 393 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 11:22:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:33,918 INFO L93 Difference]: Finished difference Result 560 states and 760 transitions. [2024-12-02 11:22:33,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:22:33,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 11:22:33,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:33,921 INFO L225 Difference]: With dead ends: 560 [2024-12-02 11:22:33,921 INFO L226 Difference]: Without dead ends: 249 [2024-12-02 11:22:33,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:22:33,922 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 95 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:22:33,922 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 283 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:22:33,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-12-02 11:22:33,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 247. [2024-12-02 11:22:33,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 202 states have (on average 1.2475247524752475) internal successors, (252), 204 states have internal predecessors, (252), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2024-12-02 11:22:33,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 328 transitions. [2024-12-02 11:22:33,942 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 328 transitions. Word has length 117 [2024-12-02 11:22:33,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:33,943 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 328 transitions. [2024-12-02 11:22:33,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 11:22:33,943 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 328 transitions. [2024-12-02 11:22:33,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 11:22:33,944 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:33,944 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 11:22:33,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 11:22:33,944 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:33,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:33,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1075080691, now seen corresponding path program 1 times [2024-12-02 11:22:33,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:33,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451592457] [2024-12-02 11:22:33,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:33,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:35,022 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 11:22:35,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:35,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451592457] [2024-12-02 11:22:35,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451592457] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:22:35,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:22:35,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:22:35,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936315620] [2024-12-02 11:22:35,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:22:35,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:22:35,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:22:35,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:22:35,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:22:35,024 INFO L87 Difference]: Start difference. First operand 247 states and 328 transitions. Second operand has 7 states, 5 states have (on average 9.0) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 11:22:35,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:35,365 INFO L93 Difference]: Finished difference Result 508 states and 677 transitions. [2024-12-02 11:22:35,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:22:35,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.0) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 3 states have call successors, (15) Word has length 117 [2024-12-02 11:22:35,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:35,367 INFO L225 Difference]: With dead ends: 508 [2024-12-02 11:22:35,367 INFO L226 Difference]: Without dead ends: 273 [2024-12-02 11:22:35,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:22:35,368 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 45 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:22:35,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 483 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:22:35,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-12-02 11:22:35,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 247. [2024-12-02 11:22:35,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 202 states have (on average 1.2425742574257426) internal successors, (251), 204 states have internal predecessors, (251), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2024-12-02 11:22:35,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 327 transitions. [2024-12-02 11:22:35,393 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 327 transitions. Word has length 117 [2024-12-02 11:22:35,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:35,394 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 327 transitions. [2024-12-02 11:22:35,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.0) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 11:22:35,394 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 327 transitions. [2024-12-02 11:22:35,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 11:22:35,395 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:35,396 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 11:22:35,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 11:22:35,396 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:35,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:35,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1333246129, now seen corresponding path program 1 times [2024-12-02 11:22:35,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:35,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700722463] [2024-12-02 11:22:35,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:35,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:36,348 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 11:22:36,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:36,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700722463] [2024-12-02 11:22:36,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700722463] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:22:36,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:22:36,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 11:22:36,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987287022] [2024-12-02 11:22:36,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:22:36,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 11:22:36,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:22:36,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 11:22:36,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:22:36,349 INFO L87 Difference]: Start difference. First operand 247 states and 327 transitions. Second operand has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 2 states have call successors, (15), 1 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 11:22:36,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:36,835 INFO L93 Difference]: Finished difference Result 516 states and 684 transitions. [2024-12-02 11:22:36,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 11:22:36,836 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 2 states have call successors, (15), 1 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 117 [2024-12-02 11:22:36,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:36,838 INFO L225 Difference]: With dead ends: 516 [2024-12-02 11:22:36,838 INFO L226 Difference]: Without dead ends: 281 [2024-12-02 11:22:36,839 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-12-02 11:22:36,839 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 52 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:22:36,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1291 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:22:36,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-12-02 11:22:36,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 269. [2024-12-02 11:22:36,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 224 states have (on average 1.2544642857142858) internal successors, (281), 226 states have internal predecessors, (281), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2024-12-02 11:22:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 357 transitions. [2024-12-02 11:22:36,862 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 357 transitions. Word has length 117 [2024-12-02 11:22:36,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:36,862 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 357 transitions. [2024-12-02 11:22:36,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 2 states have call successors, (15), 1 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 11:22:36,862 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 357 transitions. [2024-12-02 11:22:36,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 11:22:36,864 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:36,864 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 11:22:36,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 11:22:36,864 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:36,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:36,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1245925263, now seen corresponding path program 1 times [2024-12-02 11:22:36,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:36,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172097067] [2024-12-02 11:22:36,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:36,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:37,516 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 11:22:37,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:37,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172097067] [2024-12-02 11:22:37,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172097067] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:22:37,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:22:37,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 11:22:37,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016111284] [2024-12-02 11:22:37,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:22:37,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:22:37,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:22:37,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:22:37,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:22:37,518 INFO L87 Difference]: Start difference. First operand 269 states and 357 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (15), 1 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 11:22:37,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:37,851 INFO L93 Difference]: Finished difference Result 700 states and 919 transitions. [2024-12-02 11:22:37,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:22:37,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (15), 1 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 118 [2024-12-02 11:22:37,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:37,854 INFO L225 Difference]: With dead ends: 700 [2024-12-02 11:22:37,854 INFO L226 Difference]: Without dead ends: 434 [2024-12-02 11:22:37,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:22:37,856 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 47 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:22:37,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 610 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:22:37,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-12-02 11:22:37,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 302. [2024-12-02 11:22:37,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 257 states have (on average 1.2334630350194553) internal successors, (317), 259 states have internal predecessors, (317), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2024-12-02 11:22:37,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 393 transitions. [2024-12-02 11:22:37,881 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 393 transitions. Word has length 118 [2024-12-02 11:22:37,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:37,881 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 393 transitions. [2024-12-02 11:22:37,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (15), 1 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 11:22:37,881 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 393 transitions. [2024-12-02 11:22:37,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 11:22:37,883 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:37,883 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 11:22:37,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 11:22:37,883 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:37,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:37,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1144824846, now seen corresponding path program 1 times [2024-12-02 11:22:37,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:37,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238419206] [2024-12-02 11:22:37,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:37,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:42,656 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-12-02 11:22:42,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:42,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238419206] [2024-12-02 11:22:42,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238419206] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:22:42,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940283335] [2024-12-02 11:22:42,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:42,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:22:42,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:22:42,658 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:22:42,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 11:22:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:43,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-12-02 11:22:43,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:22:43,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-12-02 11:22:43,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 29 [2024-12-02 11:22:43,813 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:22:43,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 43 [2024-12-02 11:22:43,921 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:22:43,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 43 [2024-12-02 11:22:44,467 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:22:44,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 56 [2024-12-02 11:22:44,591 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:22:44,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 56 [2024-12-02 11:22:44,844 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:22:44,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 92 treesize of output 83 [2024-12-02 11:22:45,114 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:22:45,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 105 treesize of output 104 [2024-12-02 11:22:45,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:22:45,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 118 treesize of output 114 [2024-12-02 11:22:47,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:22:47,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 174 treesize of output 134 [2024-12-02 11:22:54,207 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:22:54,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 185 treesize of output 67 [2024-12-02 11:22:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 250 proven. 99 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-12-02 11:22:54,632 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:22:57,217 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 11:22:57,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940283335] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 11:22:57,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 11:22:57,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [21, 27] total 48 [2024-12-02 11:22:57,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915140753] [2024-12-02 11:22:57,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:22:57,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:22:57,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:22:57,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:22:57,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 11:22:57,219 INFO L87 Difference]: Start difference. First operand 302 states and 393 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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 11:22:58,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:58,132 INFO L93 Difference]: Finished difference Result 712 states and 919 transitions. [2024-12-02 11:22:58,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:22:58,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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 119 [2024-12-02 11:22:58,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:58,134 INFO L225 Difference]: With dead ends: 712 [2024-12-02 11:22:58,134 INFO L226 Difference]: Without dead ends: 413 [2024-12-02 11:22:58,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 218 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=239, Invalid=2211, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 11:22:58,135 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 133 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:22:58,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 449 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 11:22:58,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2024-12-02 11:22:58,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 272. [2024-12-02 11:22:58,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 229 states have (on average 1.2139737991266375) internal successors, (278), 230 states have internal predecessors, (278), 36 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-12-02 11:22:58,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 350 transitions. [2024-12-02 11:22:58,165 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 350 transitions. Word has length 119 [2024-12-02 11:22:58,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:58,166 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 350 transitions. [2024-12-02 11:22:58,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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 11:22:58,166 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 350 transitions. [2024-12-02 11:22:58,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-02 11:22:58,167 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:58,167 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 11:22:58,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 11:22:58,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986249b6-2113-4c1e-8028-1728e8a7457f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 11:22:58,368 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:58,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:58,368 INFO L85 PathProgramCache]: Analyzing trace with hash -612352598, now seen corresponding path program 1 times [2024-12-02 11:22:58,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:58,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27165379] [2024-12-02 11:22:58,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:58,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:59,394 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 11:22:59,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:59,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27165379] [2024-12-02 11:22:59,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27165379] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:22:59,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:22:59,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 11:22:59,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627388145] [2024-12-02 11:22:59,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:22:59,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 11:22:59,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:22:59,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 11:22:59,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:22:59,396 INFO L87 Difference]: Start difference. First operand 272 states and 350 transitions. Second operand has 11 states, 9 states have (on average 5.333333333333333) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 11:23:00,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:23:00,059 INFO L93 Difference]: Finished difference Result 284 states and 360 transitions. [2024-12-02 11:23:00,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 11:23:00,060 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.333333333333333) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 3 states have call successors, (15) Word has length 120 [2024-12-02 11:23:00,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:23:00,061 INFO L225 Difference]: With dead ends: 284 [2024-12-02 11:23:00,062 INFO L226 Difference]: Without dead ends: 282 [2024-12-02 11:23:00,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-12-02 11:23:00,062 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 77 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:23:00,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 679 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:23:00,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-12-02 11:23:00,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 252. [2024-12-02 11:23:00,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 216 states have (on average 1.2222222222222223) internal successors, (264), 216 states have internal predecessors, (264), 30 states have call successors, (30), 5 states have call predecessors, (30), 5 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-12-02 11:23:00,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 324 transitions. [2024-12-02 11:23:00,087 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 324 transitions. Word has length 120 [2024-12-02 11:23:00,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:23:00,087 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 324 transitions. [2024-12-02 11:23:00,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.333333333333333) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 11:23:00,087 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 324 transitions. [2024-12-02 11:23:00,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-02 11:23:00,089 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:23:00,089 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 11:23:00,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 11:23:00,089 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:23:00,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:23:00,089 INFO L85 PathProgramCache]: Analyzing trace with hash -610505556, now seen corresponding path program 1 times [2024-12-02 11:23:00,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:23:00,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343156084] [2024-12-02 11:23:00,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:00,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:23:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:23:01,478 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 11:23:01,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:23:01,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343156084] [2024-12-02 11:23:01,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343156084] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:23:01,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:23:01,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 11:23:01,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521629779] [2024-12-02 11:23:01,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:23:01,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 11:23:01,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:23:01,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 11:23:01,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:23:01,480 INFO L87 Difference]: Start difference. First operand 252 states and 324 transitions. Second operand has 13 states, 12 states have (on average 4.0) internal successors, (48), 13 states have internal predecessors, (48), 2 states have call successors, (15), 1 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 11:23:02,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:23:02,296 INFO L93 Difference]: Finished difference Result 671 states and 861 transitions. [2024-12-02 11:23:02,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 11:23:02,296 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), 2 states have call successors, (15), 1 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 120 [2024-12-02 11:23:02,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:23:02,298 INFO L225 Difference]: With dead ends: 671 [2024-12-02 11:23:02,298 INFO L226 Difference]: Without dead ends: 422 [2024-12-02 11:23:02,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-12-02 11:23:02,299 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 138 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:23:02,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 678 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:23:02,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-12-02 11:23:02,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 390. [2024-12-02 11:23:02,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 354 states have (on average 1.2485875706214689) internal successors, (442), 354 states have internal predecessors, (442), 30 states have call successors, (30), 5 states have call predecessors, (30), 5 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-12-02 11:23:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 502 transitions. [2024-12-02 11:23:02,325 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 502 transitions. Word has length 120 [2024-12-02 11:23:02,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:23:02,326 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 502 transitions. [2024-12-02 11:23:02,326 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), 2 states have call successors, (15), 1 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 11:23:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 502 transitions. [2024-12-02 11:23:02,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-02 11:23:02,327 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:23:02,327 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 11:23:02,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 11:23:02,327 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:23:02,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:23:02,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1210719126, now seen corresponding path program 1 times [2024-12-02 11:23:02,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:23:02,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903103347] [2024-12-02 11:23:02,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:02,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:23:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:23:03,073 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 11:23:03,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:23:03,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903103347] [2024-12-02 11:23:03,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903103347] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:23:03,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:23:03,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 11:23:03,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101137348] [2024-12-02 11:23:03,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:23:03,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 11:23:03,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:23:03,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 11:23:03,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:23:03,074 INFO L87 Difference]: Start difference. First operand 390 states and 502 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (15), 1 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 11:23:03,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:23:03,550 INFO L93 Difference]: Finished difference Result 420 states and 537 transitions. [2024-12-02 11:23:03,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:23:03,551 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (15), 1 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 120 [2024-12-02 11:23:03,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:23:03,552 INFO L225 Difference]: With dead ends: 420 [2024-12-02 11:23:03,552 INFO L226 Difference]: Without dead ends: 418 [2024-12-02 11:23:03,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:23:03,553 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 75 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:23:03,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 544 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:23:03,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-12-02 11:23:03,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 362. [2024-12-02 11:23:03,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 318 states have (on average 1.229559748427673) internal successors, (391), 319 states have internal predecessors, (391), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-12-02 11:23:03,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 463 transitions. [2024-12-02 11:23:03,592 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 463 transitions. Word has length 120 [2024-12-02 11:23:03,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:23:03,592 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 463 transitions. [2024-12-02 11:23:03,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (15), 1 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 11:23:03,592 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 463 transitions. [2024-12-02 11:23:03,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-02 11:23:03,593 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:23:03,593 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 11:23:03,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 11:23:03,593 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:23:03,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:23:03,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1905927733, now seen corresponding path program 1 times [2024-12-02 11:23:03,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:23:03,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178082783] [2024-12-02 11:23:03,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:03,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:23:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:23:05,180 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 11:23:05,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:23:05,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178082783] [2024-12-02 11:23:05,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178082783] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:23:05,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:23:05,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 11:23:05,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959426006] [2024-12-02 11:23:05,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:23:05,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 11:23:05,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:23:05,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 11:23:05,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:23:05,182 INFO L87 Difference]: Start difference. First operand 362 states and 463 transitions. Second operand has 12 states, 9 states have (on average 5.333333333333333) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 11:23:07,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:23:07,476 INFO L93 Difference]: Finished difference Result 808 states and 1032 transitions. [2024-12-02 11:23:07,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 11:23:07,477 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 5.333333333333333) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) Word has length 120 [2024-12-02 11:23:07,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:23:07,479 INFO L225 Difference]: With dead ends: 808 [2024-12-02 11:23:07,479 INFO L226 Difference]: Without dead ends: 466 [2024-12-02 11:23:07,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2024-12-02 11:23:07,480 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 154 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:23:07,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 896 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 11:23:07,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-12-02 11:23:07,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 362. [2024-12-02 11:23:07,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 318 states have (on average 1.2232704402515724) internal successors, (389), 319 states have internal predecessors, (389), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-12-02 11:23:07,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 461 transitions. [2024-12-02 11:23:07,513 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 461 transitions. Word has length 120 [2024-12-02 11:23:07,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:23:07,513 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 461 transitions. [2024-12-02 11:23:07,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 5.333333333333333) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 11:23:07,513 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 461 transitions. [2024-12-02 11:23:07,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 11:23:07,514 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:23:07,514 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, 1] [2024-12-02 11:23:07,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 11:23:07,514 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:23:07,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:23:07,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1369365620, now seen corresponding path program 1 times [2024-12-02 11:23:07,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:23:07,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449756788] [2024-12-02 11:23:07,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:07,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:23:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat