./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-83.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_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/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_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-83.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/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_d977090c-865e-4e50-9b0a-9d536bd01235/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 a710c8a85a9b8babc674eadb463f38727995c780b4aae16a0530660db602c87a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:09:29,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:09:29,577 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 10:09:29,582 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:09:29,582 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:09:29,604 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:09:29,605 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:09:29,605 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:09:29,605 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:09:29,605 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:09:29,606 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:09:29,606 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:09:29,606 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:09:29,606 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:09:29,606 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:09:29,606 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:09:29,607 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:09:29,607 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:09:29,607 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:09:29,607 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:09:29,607 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:09:29,607 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:09:29,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:09:29,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:09:29,607 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:09:29,607 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:09:29,607 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:09:29,607 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:09:29,608 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:09:29,608 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:09:29,608 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:09:29,608 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:09:29,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:09:29,608 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:09:29,608 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:09:29,608 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:09:29,608 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:09:29,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:09:29,608 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:09:29,609 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:09:29,609 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:09:29,609 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:09:29,609 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:09:29,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:09:29,609 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:09:29,609 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:09:29,609 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:09:29,609 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:09:29,609 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_d977090c-865e-4e50-9b0a-9d536bd01235/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 -> a710c8a85a9b8babc674eadb463f38727995c780b4aae16a0530660db602c87a [2024-12-02 10:09:29,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:09:29,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:09:29,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:09:29,861 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:09:29,861 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:09:29,863 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-83.i [2024-12-02 10:09:32,454 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/data/057c11b36/e6cb004041fb4327ae46306f1e0cc1fb/FLAG0adcf55f0 [2024-12-02 10:09:32,699 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:09:32,699 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-83.i [2024-12-02 10:09:32,708 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/data/057c11b36/e6cb004041fb4327ae46306f1e0cc1fb/FLAG0adcf55f0 [2024-12-02 10:09:33,038 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/data/057c11b36/e6cb004041fb4327ae46306f1e0cc1fb [2024-12-02 10:09:33,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:09:33,040 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:09:33,042 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:09:33,042 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:09:33,046 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:09:33,047 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:09:33" (1/1) ... [2024-12-02 10:09:33,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@798ccd81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:09:33, skipping insertion in model container [2024-12-02 10:09:33,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:09:33" (1/1) ... [2024-12-02 10:09:33,066 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:09:33,196 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_d977090c-865e-4e50-9b0a-9d536bd01235/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-83.i[917,930] [2024-12-02 10:09:33,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:09:33,267 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:09:33,277 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_d977090c-865e-4e50-9b0a-9d536bd01235/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-83.i[917,930] [2024-12-02 10:09:33,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:09:33,326 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:09:33,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:09:33 WrapperNode [2024-12-02 10:09:33,327 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:09:33,328 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:09:33,328 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:09:33,328 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:09:33,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:09:33" (1/1) ... [2024-12-02 10:09:33,345 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:09:33" (1/1) ... [2024-12-02 10:09:33,377 INFO L138 Inliner]: procedures = 30, calls = 153, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 523 [2024-12-02 10:09:33,377 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:09:33,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:09:33,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:09:33,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:09:33,387 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:09:33" (1/1) ... [2024-12-02 10:09:33,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:09:33" (1/1) ... [2024-12-02 10:09:33,393 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:09:33" (1/1) ... [2024-12-02 10:09:33,400 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-12-02 10:09:33,400 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:09:33" (1/1) ... [2024-12-02 10:09:33,400 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:09:33" (1/1) ... [2024-12-02 10:09:33,414 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:09:33" (1/1) ... [2024-12-02 10:09:33,416 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:09:33" (1/1) ... [2024-12-02 10:09:33,421 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:09:33" (1/1) ... [2024-12-02 10:09:33,423 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:09:33" (1/1) ... [2024-12-02 10:09:33,425 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:09:33" (1/1) ... [2024-12-02 10:09:33,430 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:09:33,431 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:09:33,431 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:09:33,431 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:09:33,432 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:09:33" (1/1) ... [2024-12-02 10:09:33,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:09:33,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:09:33,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:09:33,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:09:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:09:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-12-02 10:09:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-12-02 10:09:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-12-02 10:09:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-02 10:09:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-12-02 10:09:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-02 10:09:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 10:09:33,493 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 10:09:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-02 10:09:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:09:33,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:09:33,600 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:09:33,602 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:09:34,134 INFO L? ?]: Removed 139 outVars from TransFormulas that were not future-live. [2024-12-02 10:09:34,135 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:09:34,145 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:09:34,146 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 10:09:34,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:09:34 BoogieIcfgContainer [2024-12-02 10:09:34,146 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:09:34,148 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:09:34,149 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:09:34,153 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:09:34,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:09:33" (1/3) ... [2024-12-02 10:09:34,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39de760d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:09:34, skipping insertion in model container [2024-12-02 10:09:34,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:09:33" (2/3) ... [2024-12-02 10:09:34,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39de760d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:09:34, skipping insertion in model container [2024-12-02 10:09:34,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:09:34" (3/3) ... [2024-12-02 10:09:34,156 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-83.i [2024-12-02 10:09:34,168 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:09:34,169 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-sp_file-83.i that has 2 procedures, 112 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 10:09:34,228 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:09:34,239 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;@36bd32a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:09:34,239 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 10:09:34,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 98 states have (on average 1.469387755102041) internal successors, (144), 99 states have internal predecessors, (144), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-12-02 10:09:34,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 10:09:34,250 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:09:34,250 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:34,251 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:09:34,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:09:34,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1804544545, now seen corresponding path program 1 times [2024-12-02 10:09:34,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:09:34,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146272345] [2024-12-02 10:09:34,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:09:34,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:09:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:09:34,740 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 10:09:34,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:09:34,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146272345] [2024-12-02 10:09:34,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146272345] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:09:34,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:09:34,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:09:34,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584440854] [2024-12-02 10:09:34,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:09:34,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:09:34,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:09:34,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:09:34,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:09:34,763 INFO L87 Difference]: Start difference. First operand has 112 states, 98 states have (on average 1.469387755102041) internal successors, (144), 99 states have internal predecessors, (144), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 10:09:34,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:09:34,821 INFO L93 Difference]: Finished difference Result 220 states and 341 transitions. [2024-12-02 10:09:34,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:09:34,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 106 [2024-12-02 10:09:34,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:09:34,830 INFO L225 Difference]: With dead ends: 220 [2024-12-02 10:09:34,830 INFO L226 Difference]: Without dead ends: 111 [2024-12-02 10:09:34,833 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 10:09:34,835 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 1 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:09:34,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 439 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:09:34,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-12-02 10:09:34,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2024-12-02 10:09:34,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 97 states have (on average 1.3711340206185567) internal successors, (133), 97 states have internal predecessors, (133), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-12-02 10:09:34,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 155 transitions. [2024-12-02 10:09:34,870 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 155 transitions. Word has length 106 [2024-12-02 10:09:34,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:09:34,872 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 155 transitions. [2024-12-02 10:09:34,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 10:09:34,873 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 155 transitions. [2024-12-02 10:09:34,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 10:09:34,875 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:09:34,875 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:34,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 10:09:34,875 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:09:34,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:09:34,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1810364381, now seen corresponding path program 1 times [2024-12-02 10:09:34,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:09:34,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776094711] [2024-12-02 10:09:34,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:09:34,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:09:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:09:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 10:09:35,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:09:35,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776094711] [2024-12-02 10:09:35,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776094711] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:09:35,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:09:35,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:09:35,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343869604] [2024-12-02 10:09:35,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:09:35,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:09:35,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:09:35,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:09:35,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:09:35,128 INFO L87 Difference]: Start difference. First operand 110 states and 155 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 10:09:35,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:09:35,166 INFO L93 Difference]: Finished difference Result 220 states and 311 transitions. [2024-12-02 10:09:35,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:09:35,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 106 [2024-12-02 10:09:35,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:09:35,169 INFO L225 Difference]: With dead ends: 220 [2024-12-02 10:09:35,169 INFO L226 Difference]: Without dead ends: 113 [2024-12-02 10:09:35,169 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 10:09:35,171 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 1 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:09:35,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 440 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:09:35,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-12-02 10:09:35,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2024-12-02 10:09:35,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 99 states have (on average 1.3636363636363635) internal successors, (135), 99 states have internal predecessors, (135), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-12-02 10:09:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 157 transitions. [2024-12-02 10:09:35,181 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 157 transitions. Word has length 106 [2024-12-02 10:09:35,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:09:35,181 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 157 transitions. [2024-12-02 10:09:35,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 10:09:35,182 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 157 transitions. [2024-12-02 10:09:35,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 10:09:35,183 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:09:35,183 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:35,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 10:09:35,184 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:09:35,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:09:35,185 INFO L85 PathProgramCache]: Analyzing trace with hash -35357019, now seen corresponding path program 1 times [2024-12-02 10:09:35,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:09:35,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762135548] [2024-12-02 10:09:35,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:09:35,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:09:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:09:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 10:09:35,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:09:35,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762135548] [2024-12-02 10:09:35,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762135548] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:09:35,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:09:35,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:09:35,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781964111] [2024-12-02 10:09:35,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:09:35,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:09:35,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:09:35,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:09:35,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:09:35,377 INFO L87 Difference]: Start difference. First operand 112 states and 157 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 10:09:35,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:09:35,402 INFO L93 Difference]: Finished difference Result 224 states and 315 transitions. [2024-12-02 10:09:35,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:09:35,403 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 106 [2024-12-02 10:09:35,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:09:35,404 INFO L225 Difference]: With dead ends: 224 [2024-12-02 10:09:35,404 INFO L226 Difference]: Without dead ends: 115 [2024-12-02 10:09:35,405 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 10:09:35,405 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 1 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:09:35,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 442 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:09:35,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-12-02 10:09:35,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2024-12-02 10:09:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 101 states have (on average 1.3564356435643565) internal successors, (137), 101 states have internal predecessors, (137), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-12-02 10:09:35,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 159 transitions. [2024-12-02 10:09:35,414 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 159 transitions. Word has length 106 [2024-12-02 10:09:35,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:09:35,414 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 159 transitions. [2024-12-02 10:09:35,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 10:09:35,415 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 159 transitions. [2024-12-02 10:09:35,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 10:09:35,416 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:09:35,416 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:35,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 10:09:35,416 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:09:35,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:09:35,417 INFO L85 PathProgramCache]: Analyzing trace with hash -33509977, now seen corresponding path program 1 times [2024-12-02 10:09:35,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:09:35,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460299359] [2024-12-02 10:09:35,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:09:35,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:09:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:09:36,486 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 10:09:36,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:09:36,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460299359] [2024-12-02 10:09:36,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460299359] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:09:36,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:09:36,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:09:36,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789797627] [2024-12-02 10:09:36,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:09:36,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:09:36,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:09:36,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:09:36,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:09:36,488 INFO L87 Difference]: Start difference. First operand 114 states and 159 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 10:09:36,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:09:36,994 INFO L93 Difference]: Finished difference Result 225 states and 315 transitions. [2024-12-02 10:09:36,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:09:36,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2024-12-02 10:09:36,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:09:36,996 INFO L225 Difference]: With dead ends: 225 [2024-12-02 10:09:36,996 INFO L226 Difference]: Without dead ends: 114 [2024-12-02 10:09:36,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:09:36,998 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 146 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:09:36,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 320 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 10:09:36,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-12-02 10:09:37,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-12-02 10:09:37,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 101 states have (on average 1.3465346534653466) internal successors, (136), 101 states have internal predecessors, (136), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-12-02 10:09:37,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 158 transitions. [2024-12-02 10:09:37,010 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 158 transitions. Word has length 106 [2024-12-02 10:09:37,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:09:37,010 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 158 transitions. [2024-12-02 10:09:37,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 10:09:37,010 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 158 transitions. [2024-12-02 10:09:37,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 10:09:37,012 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:09:37,012 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:37,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:09:37,012 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:09:37,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:09:37,013 INFO L85 PathProgramCache]: Analyzing trace with hash 895739275, now seen corresponding path program 1 times [2024-12-02 10:09:37,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:09:37,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961658746] [2024-12-02 10:09:37,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:09:37,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:09:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:09:37,276 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 10:09:37,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:09:37,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961658746] [2024-12-02 10:09:37,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961658746] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:09:37,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:09:37,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:09:37,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076702603] [2024-12-02 10:09:37,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:09:37,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:09:37,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:09:37,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:09:37,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:09:37,278 INFO L87 Difference]: Start difference. First operand 114 states and 158 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 10:09:37,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:09:37,528 INFO L93 Difference]: Finished difference Result 227 states and 316 transitions. [2024-12-02 10:09:37,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:09:37,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 107 [2024-12-02 10:09:37,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:09:37,530 INFO L225 Difference]: With dead ends: 227 [2024-12-02 10:09:37,530 INFO L226 Difference]: Without dead ends: 116 [2024-12-02 10:09:37,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:09:37,531 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 3 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:09:37,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 481 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:09:37,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-12-02 10:09:37,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-12-02 10:09:37,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 103 states have (on average 1.3398058252427185) internal successors, (138), 103 states have internal predecessors, (138), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-12-02 10:09:37,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 160 transitions. [2024-12-02 10:09:37,545 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 160 transitions. Word has length 107 [2024-12-02 10:09:37,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:09:37,546 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 160 transitions. [2024-12-02 10:09:37,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 10:09:37,546 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 160 transitions. [2024-12-02 10:09:37,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 10:09:37,548 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:09:37,548 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:37,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:09:37,548 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:09:37,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:09:37,549 INFO L85 PathProgramCache]: Analyzing trace with hash 85606593, now seen corresponding path program 1 times [2024-12-02 10:09:37,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:09:37,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441582057] [2024-12-02 10:09:37,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:09:37,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:09:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:09:40,216 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 10:09:40,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:09:40,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441582057] [2024-12-02 10:09:40,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441582057] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:09:40,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:09:40,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 10:09:40,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202451569] [2024-12-02 10:09:40,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:09:40,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 10:09:40,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:09:40,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 10:09:40,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-12-02 10:09:40,219 INFO L87 Difference]: Start difference. First operand 116 states and 160 transitions. Second operand has 13 states, 12 states have (on average 4.666666666666667) internal successors, (56), 13 states have internal predecessors, (56), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-12-02 10:09:41,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:09:41,459 INFO L93 Difference]: Finished difference Result 298 states and 411 transitions. [2024-12-02 10:09:41,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 10:09:41,460 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.666666666666667) internal successors, (56), 13 states have internal predecessors, (56), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 108 [2024-12-02 10:09:41,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:09:41,462 INFO L225 Difference]: With dead ends: 298 [2024-12-02 10:09:41,462 INFO L226 Difference]: Without dead ends: 185 [2024-12-02 10:09:41,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2024-12-02 10:09:41,463 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 475 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 10:09:41,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 636 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 10:09:41,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-12-02 10:09:41,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 137. [2024-12-02 10:09:41,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 124 states have (on average 1.3548387096774193) internal successors, (168), 124 states have internal predecessors, (168), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-12-02 10:09:41,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 190 transitions. [2024-12-02 10:09:41,481 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 190 transitions. Word has length 108 [2024-12-02 10:09:41,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:09:41,481 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 190 transitions. [2024-12-02 10:09:41,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.666666666666667) internal successors, (56), 13 states have internal predecessors, (56), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-12-02 10:09:41,481 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 190 transitions. [2024-12-02 10:09:41,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 10:09:41,483 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:09:41,483 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:41,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 10:09:41,483 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:09:41,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:09:41,484 INFO L85 PathProgramCache]: Analyzing trace with hash -935461761, now seen corresponding path program 1 times [2024-12-02 10:09:41,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:09:41,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798136952] [2024-12-02 10:09:41,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:09:41,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:09:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 10:09:41,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860229373] [2024-12-02 10:09:41,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:09:41,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:09:41,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:09:41,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:09:41,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:09:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:09:42,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-12-02 10:09:42,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:09:42,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 42 [2024-12-02 10:09:42,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 56 [2024-12-02 10:09:44,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:44,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:44,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:44,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2024-12-02 10:09:44,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2024-12-02 10:09:45,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2024-12-02 10:09:45,158 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 10:09:45,159 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:09:45,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:09:45,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798136952] [2024-12-02 10:09:45,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 10:09:45,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860229373] [2024-12-02 10:09:45,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860229373] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:09:45,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:09:45,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 10:09:45,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974110384] [2024-12-02 10:09:45,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:09:45,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 10:09:45,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:09:45,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 10:09:45,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-12-02 10:09:45,161 INFO L87 Difference]: Start difference. First operand 137 states and 190 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 10:09:46,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:09:46,880 INFO L93 Difference]: Finished difference Result 552 states and 765 transitions. [2024-12-02 10:09:46,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 10:09:46,880 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 108 [2024-12-02 10:09:46,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:09:46,882 INFO L225 Difference]: With dead ends: 552 [2024-12-02 10:09:46,882 INFO L226 Difference]: Without dead ends: 418 [2024-12-02 10:09:46,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-12-02 10:09:46,883 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 557 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:09:46,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 807 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 10:09:46,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-12-02 10:09:46,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 193. [2024-12-02 10:09:46,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 168 states have (on average 1.3511904761904763) internal successors, (227), 168 states have internal predecessors, (227), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-12-02 10:09:46,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 271 transitions. [2024-12-02 10:09:46,909 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 271 transitions. Word has length 108 [2024-12-02 10:09:46,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:09:46,909 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 271 transitions. [2024-12-02 10:09:46,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 10:09:46,909 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 271 transitions. [2024-12-02 10:09:46,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 10:09:46,910 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:09:46,910 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:46,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:09:47,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 10:09:47,111 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:09:47,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:09:47,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1771157633, now seen corresponding path program 1 times [2024-12-02 10:09:47,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:09:47,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031047083] [2024-12-02 10:09:47,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:09:47,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:09:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 10:09:47,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454082869] [2024-12-02 10:09:47,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:09:47,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:09:47,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:09:47,255 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:09:47,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 10:09:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:09:47,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-12-02 10:09:47,625 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:09:49,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 10:09:49,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2024-12-02 10:09:49,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:49,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:49,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:49,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:49,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:49,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:49,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2024-12-02 10:09:49,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:49,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:49,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:49,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:49,906 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-12-02 10:09:49,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 40 [2024-12-02 10:09:49,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-12-02 10:09:50,041 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-12-02 10:09:50,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:09:50,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:09:50,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031047083] [2024-12-02 10:09:50,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 10:09:50,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454082869] [2024-12-02 10:09:50,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454082869] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:09:50,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:09:50,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-12-02 10:09:50,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037779778] [2024-12-02 10:09:50,371 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 10:09:50,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 10:09:50,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:09:50,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 10:09:50,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-12-02 10:09:50,372 INFO L87 Difference]: Start difference. First operand 193 states and 271 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 10:09:51,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:09:51,149 INFO L93 Difference]: Finished difference Result 348 states and 490 transitions. [2024-12-02 10:09:51,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:09:51,150 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2024-12-02 10:09:51,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:09:51,151 INFO L225 Difference]: With dead ends: 348 [2024-12-02 10:09:51,151 INFO L226 Difference]: Without dead ends: 203 [2024-12-02 10:09:51,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2024-12-02 10:09:51,152 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 140 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 10:09:51,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 351 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 10:09:51,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-12-02 10:09:51,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 144. [2024-12-02 10:09:51,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 131 states have (on average 1.3435114503816794) internal successors, (176), 131 states have internal predecessors, (176), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-12-02 10:09:51,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 198 transitions. [2024-12-02 10:09:51,164 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 198 transitions. Word has length 108 [2024-12-02 10:09:51,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:09:51,164 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 198 transitions. [2024-12-02 10:09:51,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 10:09:51,164 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 198 transitions. [2024-12-02 10:09:51,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 10:09:51,165 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:09:51,165 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:51,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 10:09:51,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-12-02 10:09:51,366 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:09:51,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:09:51,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1718407104, now seen corresponding path program 1 times [2024-12-02 10:09:51,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:09:51,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154313759] [2024-12-02 10:09:51,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:09:51,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:09:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:09:52,579 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 10:09:52,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:09:52,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154313759] [2024-12-02 10:09:52,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154313759] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:09:52,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:09:52,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 10:09:52,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521797225] [2024-12-02 10:09:52,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:09:52,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 10:09:52,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:09:52,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 10:09:52,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:09:52,581 INFO L87 Difference]: Start difference. First operand 144 states and 198 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-02 10:09:53,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:09:53,439 INFO L93 Difference]: Finished difference Result 319 states and 441 transitions. [2024-12-02 10:09:53,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:09:53,439 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 108 [2024-12-02 10:09:53,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:09:53,440 INFO L225 Difference]: With dead ends: 319 [2024-12-02 10:09:53,440 INFO L226 Difference]: Without dead ends: 178 [2024-12-02 10:09:53,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-12-02 10:09:53,441 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 208 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 10:09:53,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 370 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 10:09:53,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-12-02 10:09:53,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2024-12-02 10:09:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 154 states have (on average 1.3181818181818181) internal successors, (203), 155 states have internal predecessors, (203), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 10:09:53,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 243 transitions. [2024-12-02 10:09:53,461 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 243 transitions. Word has length 108 [2024-12-02 10:09:53,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:09:53,461 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 243 transitions. [2024-12-02 10:09:53,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-02 10:09:53,461 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 243 transitions. [2024-12-02 10:09:53,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 10:09:53,461 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:09:53,462 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:53,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 10:09:53,462 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:09:53,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:09:53,462 INFO L85 PathProgramCache]: Analyzing trace with hash 450741633, now seen corresponding path program 1 times [2024-12-02 10:09:53,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:09:53,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302478611] [2024-12-02 10:09:53,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:09:53,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:09:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 10:09:53,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417848388] [2024-12-02 10:09:53,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:09:53,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:09:53,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:09:53,577 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:09:53,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 10:09:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:09:53,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-12-02 10:09:53,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:09:54,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 10:09:55,790 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 26 treesize of output 14 [2024-12-02 10:09:56,145 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 26 treesize of output 14 [2024-12-02 10:09:56,521 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 26 treesize of output 14 [2024-12-02 10:09:56,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:56,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:56,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,138 INFO L349 Elim1Store]: treesize reduction 266, result has 26.3 percent of original size [2024-12-02 10:09:57,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 75 treesize of output 169 [2024-12-02 10:09:57,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 31 [2024-12-02 10:09:57,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,494 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:09:57,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 25 [2024-12-02 10:09:57,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,655 INFO L349 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2024-12-02 10:09:57,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 35 [2024-12-02 10:09:57,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,688 INFO L349 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2024-12-02 10:09:57,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 35 [2024-12-02 10:09:57,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,732 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-12-02 10:09:57,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 27 [2024-12-02 10:09:57,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,815 INFO L349 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2024-12-02 10:09:57,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 30 [2024-12-02 10:09:57,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,866 INFO L349 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2024-12-02 10:09:57,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 30 [2024-12-02 10:09:57,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,961 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-12-02 10:09:57,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24 [2024-12-02 10:09:57,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,978 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-12-02 10:09:57,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24 [2024-12-02 10:09:57,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:57,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:58,001 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-12-02 10:09:58,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24 [2024-12-02 10:09:58,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:58,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:58,027 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-12-02 10:09:58,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24 [2024-12-02 10:09:58,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:58,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2024-12-02 10:09:58,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:58,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2024-12-02 10:09:58,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:58,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2024-12-02 10:09:58,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:58,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2024-12-02 10:09:58,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:58,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:58,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2024-12-02 10:09:58,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:58,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:58,193 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-12-02 10:09:58,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24 [2024-12-02 10:09:58,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:58,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:58,224 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-12-02 10:09:58,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24 [2024-12-02 10:09:58,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:58,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:58,241 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-12-02 10:09:58,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24 [2024-12-02 10:09:58,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:58,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:58,261 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-12-02 10:09:58,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24 [2024-12-02 10:09:59,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:59,325 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 26 treesize of output 14 [2024-12-02 10:09:59,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:59,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:59,490 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 33 treesize of output 24 [2024-12-02 10:09:59,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:09:59,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-12-02 10:09:59,600 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 68 proven. 78 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-12-02 10:09:59,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:10:17,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:10:17,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302478611] [2024-12-02 10:10:17,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 10:10:17,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417848388] [2024-12-02 10:10:17,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417848388] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:10:17,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:10:17,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-12-02 10:10:17,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561137009] [2024-12-02 10:10:17,023 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 10:10:17,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 10:10:17,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:10:17,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 10:10:17,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=426, Unknown=4, NotChecked=0, Total=506 [2024-12-02 10:10:17,025 INFO L87 Difference]: Start difference. First operand 177 states and 243 transitions. Second operand has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-12-02 10:10:18,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:10:18,916 INFO L93 Difference]: Finished difference Result 481 states and 649 transitions. [2024-12-02 10:10:18,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 10:10:18,916 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 108 [2024-12-02 10:10:18,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:10:18,918 INFO L225 Difference]: With dead ends: 481 [2024-12-02 10:10:18,918 INFO L226 Difference]: Without dead ends: 336 [2024-12-02 10:10:18,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=255, Invalid=931, Unknown=4, NotChecked=0, Total=1190 [2024-12-02 10:10:18,919 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 322 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:10:18,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 727 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 10:10:18,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-12-02 10:10:18,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 318. [2024-12-02 10:10:18,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 284 states have (on average 1.3309859154929577) internal successors, (378), 287 states have internal predecessors, (378), 28 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2024-12-02 10:10:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 434 transitions. [2024-12-02 10:10:18,951 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 434 transitions. Word has length 108 [2024-12-02 10:10:18,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:10:18,952 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 434 transitions. [2024-12-02 10:10:18,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-12-02 10:10:18,952 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 434 transitions. [2024-12-02 10:10:18,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 10:10:18,952 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:10:18,953 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:18,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 10:10:19,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:10:19,153 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:10:19,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:10:19,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1137606269, now seen corresponding path program 1 times [2024-12-02 10:10:19,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:10:19,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043758150] [2024-12-02 10:10:19,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:10:19,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:10:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:10:21,611 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 10:10:21,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:10:21,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043758150] [2024-12-02 10:10:21,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043758150] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:10:21,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:10:21,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 10:10:21,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423222910] [2024-12-02 10:10:21,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:10:21,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 10:10:21,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:10:21,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 10:10:21,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-12-02 10:10:21,613 INFO L87 Difference]: Start difference. First operand 318 states and 434 transitions. Second operand has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-12-02 10:10:23,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:10:23,654 INFO L93 Difference]: Finished difference Result 729 states and 994 transitions. [2024-12-02 10:10:23,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 10:10:23,654 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 108 [2024-12-02 10:10:23,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:10:23,657 INFO L225 Difference]: With dead ends: 729 [2024-12-02 10:10:23,657 INFO L226 Difference]: Without dead ends: 447 [2024-12-02 10:10:23,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:10:23,658 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 424 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 10:10:23,658 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 832 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 10:10:23,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2024-12-02 10:10:23,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 330. [2024-12-02 10:10:23,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 296 states have (on average 1.3344594594594594) internal successors, (395), 299 states have internal predecessors, (395), 28 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2024-12-02 10:10:23,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 451 transitions. [2024-12-02 10:10:23,699 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 451 transitions. Word has length 108 [2024-12-02 10:10:23,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:10:23,700 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 451 transitions. [2024-12-02 10:10:23,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-12-02 10:10:23,700 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 451 transitions. [2024-12-02 10:10:23,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 10:10:23,701 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:10:23,701 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:23,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 10:10:23,701 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:10:23,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:10:23,702 INFO L85 PathProgramCache]: Analyzing trace with hash 962336897, now seen corresponding path program 1 times [2024-12-02 10:10:23,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:10:23,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856860581] [2024-12-02 10:10:23,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:10:23,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:10:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 10:10:23,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146580625] [2024-12-02 10:10:23,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:10:23,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:10:23,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:10:23,852 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:10:23,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 10:10:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:10:24,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 10:10:24,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:10:24,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 70 [2024-12-02 10:10:25,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 104 [2024-12-02 10:10:25,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:10:25,937 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 23 treesize of output 11 [2024-12-02 10:10:26,055 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 10:10:26,055 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:10:26,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:10:26,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856860581] [2024-12-02 10:10:26,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 10:10:26,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146580625] [2024-12-02 10:10:26,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146580625] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:10:26,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:10:26,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:10:26,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246790184] [2024-12-02 10:10:26,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:10:26,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 10:10:26,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:10:26,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 10:10:26,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:10:26,056 INFO L87 Difference]: Start difference. First operand 330 states and 451 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 10:10:30,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:10:30,912 INFO L93 Difference]: Finished difference Result 865 states and 1180 transitions. [2024-12-02 10:10:30,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:10:30,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 108 [2024-12-02 10:10:30,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:10:30,915 INFO L225 Difference]: With dead ends: 865 [2024-12-02 10:10:30,915 INFO L226 Difference]: Without dead ends: 571 [2024-12-02 10:10:30,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:10:30,916 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 235 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:10:30,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 605 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-12-02 10:10:30,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2024-12-02 10:10:30,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 376. [2024-12-02 10:10:30,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 339 states have (on average 1.3333333333333333) internal successors, (452), 341 states have internal predecessors, (452), 30 states have call successors, (30), 6 states have call predecessors, (30), 6 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2024-12-02 10:10:30,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 512 transitions. [2024-12-02 10:10:30,984 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 512 transitions. Word has length 108 [2024-12-02 10:10:30,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:10:30,984 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 512 transitions. [2024-12-02 10:10:30,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 10:10:30,985 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 512 transitions. [2024-12-02 10:10:30,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 10:10:30,986 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:10:30,986 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:30,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 10:10:31,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d977090c-865e-4e50-9b0a-9d536bd01235/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:10:31,186 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:10:31,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:10:31,187 INFO L85 PathProgramCache]: Analyzing trace with hash -626011005, now seen corresponding path program 1 times [2024-12-02 10:10:31,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:10:31,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925117120] [2024-12-02 10:10:31,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:10:31,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:10:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat