./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-30.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_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/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_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-30.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/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_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/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 11d74a543cee1f351191abd3a7069f7bb4ba76af68915de79e2fa012ba9bfe73 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:08:56,503 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:08:56,556 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 08:08:56,561 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:08:56,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:08:56,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:08:56,583 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:08:56,583 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:08:56,583 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:08:56,583 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:08:56,583 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:08:56,583 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:08:56,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:08:56,584 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:08:56,584 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:08:56,584 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:08:56,584 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:08:56,584 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:08:56,584 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:08:56,584 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:08:56,585 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:08:56,585 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:08:56,585 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:08:56,585 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:08:56,585 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:08:56,585 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:08:56,585 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:08:56,585 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:08:56,585 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:08:56,585 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:08:56,585 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:08:56,585 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:08:56,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:08:56,586 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:08:56,586 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:08:56,586 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:08:56,586 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:08:56,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:08:56,586 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:08:56,586 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:08:56,586 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:08:56,586 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:08:56,586 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:08:56,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:08:56,587 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:08:56,587 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:08:56,587 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:08:56,587 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:08:56,587 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_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/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 -> 11d74a543cee1f351191abd3a7069f7bb4ba76af68915de79e2fa012ba9bfe73 [2024-12-02 08:08:56,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:08:56,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:08:56,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:08:56,819 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:08:56,820 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:08:56,821 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-30.i [2024-12-02 08:08:59,453 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/data/e9b271e79/41ccc79f07784bb59f60e6fedf673d73/FLAGbec4bc372 [2024-12-02 08:08:59,713 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:08:59,714 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-30.i [2024-12-02 08:08:59,721 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/data/e9b271e79/41ccc79f07784bb59f60e6fedf673d73/FLAGbec4bc372 [2024-12-02 08:08:59,736 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/data/e9b271e79/41ccc79f07784bb59f60e6fedf673d73 [2024-12-02 08:08:59,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:08:59,741 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:08:59,742 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:08:59,742 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:08:59,747 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:08:59,748 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:08:59" (1/1) ... [2024-12-02 08:08:59,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48358a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:59, skipping insertion in model container [2024-12-02 08:08:59,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:08:59" (1/1) ... [2024-12-02 08:08:59,768 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:08:59,895 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_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-30.i[916,929] [2024-12-02 08:08:59,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:08:59,948 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:08:59,956 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_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-30.i[916,929] [2024-12-02 08:08:59,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:09:00,011 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:09:00,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:00 WrapperNode [2024-12-02 08:09:00,012 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:09:00,013 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:09:00,013 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:09:00,013 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:09:00,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:00" (1/1) ... [2024-12-02 08:09:00,027 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:00" (1/1) ... [2024-12-02 08:09:00,061 INFO L138 Inliner]: procedures = 30, calls = 168, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 517 [2024-12-02 08:09:00,061 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:09:00,062 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:09:00,062 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:09:00,062 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:09:00,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:00" (1/1) ... [2024-12-02 08:09:00,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:00" (1/1) ... [2024-12-02 08:09:00,074 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:00" (1/1) ... [2024-12-02 08:09:00,081 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-12-02 08:09:00,081 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:00" (1/1) ... [2024-12-02 08:09:00,081 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:00" (1/1) ... [2024-12-02 08:09:00,101 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:00" (1/1) ... [2024-12-02 08:09:00,103 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:00" (1/1) ... [2024-12-02 08:09:00,108 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:00" (1/1) ... [2024-12-02 08:09:00,111 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:00" (1/1) ... [2024-12-02 08:09:00,114 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:00" (1/1) ... [2024-12-02 08:09:00,119 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:09:00,119 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:09:00,119 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:09:00,120 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:09:00,120 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:00" (1/1) ... [2024-12-02 08:09:00,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:09:00,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:09:00,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:09:00,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:09:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:09:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-12-02 08:09:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-12-02 08:09:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-12-02 08:09:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-02 08:09:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-12-02 08:09:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-02 08:09:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 08:09:00,176 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 08:09:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-02 08:09:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:09:00,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:09:00,273 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:09:00,275 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:09:00,852 INFO L? ?]: Removed 149 outVars from TransFormulas that were not future-live. [2024-12-02 08:09:00,852 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:09:00,863 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:09:00,863 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 08:09:00,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:09:00 BoogieIcfgContainer [2024-12-02 08:09:00,864 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:09:00,866 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:09:00,866 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:09:00,871 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:09:00,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:08:59" (1/3) ... [2024-12-02 08:09:00,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d783e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:09:00, skipping insertion in model container [2024-12-02 08:09:00,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:09:00" (2/3) ... [2024-12-02 08:09:00,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d783e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:09:00, skipping insertion in model container [2024-12-02 08:09:00,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:09:00" (3/3) ... [2024-12-02 08:09:00,874 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-30.i [2024-12-02 08:09:00,888 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:09:00,890 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-s_file-30.i that has 2 procedures, 120 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 08:09:00,940 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:09:00,950 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;@e277406, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:09:00,950 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 08:09:00,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 100 states have (on average 1.41) internal successors, (141), 101 states have internal predecessors, (141), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 08:09:00,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 08:09:00,962 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:09:00,963 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:00,963 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:09:00,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:00,967 INFO L85 PathProgramCache]: Analyzing trace with hash 548327258, now seen corresponding path program 1 times [2024-12-02 08:09:00,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:00,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603057421] [2024-12-02 08:09:00,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:00,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-12-02 08:09:01,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:01,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603057421] [2024-12-02 08:09:01,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603057421] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:09:01,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565413815] [2024-12-02 08:09:01,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:01,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:09:01,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:09:01,280 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:09:01,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:09:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:01,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 08:09:01,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:09:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-12-02 08:09:01,574 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:09:01,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565413815] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:01,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:09:01,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 08:09:01,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037553481] [2024-12-02 08:09:01,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:01,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:09:01,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:01,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:09:01,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:09:01,599 INFO L87 Difference]: Start difference. First operand has 120 states, 100 states have (on average 1.41) internal successors, (141), 101 states have internal predecessors, (141), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:09:01,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:09:01,619 INFO L93 Difference]: Finished difference Result 233 states and 361 transitions. [2024-12-02 08:09:01,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:09:01,621 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 138 [2024-12-02 08:09:01,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:09:01,626 INFO L225 Difference]: With dead ends: 233 [2024-12-02 08:09:01,627 INFO L226 Difference]: Without dead ends: 116 [2024-12-02 08:09:01,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:09:01,631 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:09:01,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:09:01,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-12-02 08:09:01,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-12-02 08:09:01,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 97 states have (on average 1.3814432989690721) internal successors, (134), 97 states have internal predecessors, (134), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 08:09:01,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 168 transitions. [2024-12-02 08:09:01,665 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 168 transitions. Word has length 138 [2024-12-02 08:09:01,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:09:01,665 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 168 transitions. [2024-12-02 08:09:01,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:09:01,666 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 168 transitions. [2024-12-02 08:09:01,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 08:09:01,668 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:09:01,669 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:01,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:09:01,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 08:09:01,869 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:09:01,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:01,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1959915148, now seen corresponding path program 1 times [2024-12-02 08:09:01,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:01,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638346546] [2024-12-02 08:09:01,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:01,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:02,179 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-12-02 08:09:02,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:02,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638346546] [2024-12-02 08:09:02,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638346546] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:02,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:02,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:09:02,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892577096] [2024-12-02 08:09:02,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:02,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:09:02,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:02,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:09:02,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:09:02,182 INFO L87 Difference]: Start difference. First operand 116 states and 168 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:09:02,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:09:02,234 INFO L93 Difference]: Finished difference Result 231 states and 336 transitions. [2024-12-02 08:09:02,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:09:02,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 138 [2024-12-02 08:09:02,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:09:02,237 INFO L225 Difference]: With dead ends: 231 [2024-12-02 08:09:02,237 INFO L226 Difference]: Without dead ends: 118 [2024-12-02 08:09:02,238 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 08:09:02,239 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 0 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:09:02,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 487 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:09:02,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-12-02 08:09:02,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-12-02 08:09:02,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 99 states have (on average 1.3737373737373737) internal successors, (136), 99 states have internal predecessors, (136), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 08:09:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 170 transitions. [2024-12-02 08:09:02,250 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 170 transitions. Word has length 138 [2024-12-02 08:09:02,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:09:02,251 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 170 transitions. [2024-12-02 08:09:02,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:09:02,251 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 170 transitions. [2024-12-02 08:09:02,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 08:09:02,253 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:09:02,253 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:02,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:09:02,253 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:09:02,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:02,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1944396430, now seen corresponding path program 1 times [2024-12-02 08:09:02,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:02,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392276461] [2024-12-02 08:09:02,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:02,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:02,543 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-12-02 08:09:02,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:02,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392276461] [2024-12-02 08:09:02,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392276461] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:02,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:02,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:09:02,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018719648] [2024-12-02 08:09:02,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:02,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:09:02,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:02,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:09:02,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:09:02,545 INFO L87 Difference]: Start difference. First operand 118 states and 170 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-12-02 08:09:02,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:09:02,592 INFO L93 Difference]: Finished difference Result 236 states and 341 transitions. [2024-12-02 08:09:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:09:02,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 138 [2024-12-02 08:09:02,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:09:02,594 INFO L225 Difference]: With dead ends: 236 [2024-12-02 08:09:02,594 INFO L226 Difference]: Without dead ends: 121 [2024-12-02 08:09:02,595 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 08:09:02,596 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 1 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:09:02,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 486 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:09:02,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-12-02 08:09:02,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2024-12-02 08:09:02,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 101 states have (on average 1.3663366336633664) internal successors, (138), 101 states have internal predecessors, (138), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 08:09:02,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 172 transitions. [2024-12-02 08:09:02,607 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 172 transitions. Word has length 138 [2024-12-02 08:09:02,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:09:02,608 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 172 transitions. [2024-12-02 08:09:02,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-12-02 08:09:02,608 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 172 transitions. [2024-12-02 08:09:02,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 08:09:02,610 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:09:02,611 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:02,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:09:02,611 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:09:02,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:02,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1942549388, now seen corresponding path program 1 times [2024-12-02 08:09:02,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:02,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730143240] [2024-12-02 08:09:02,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:02,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-12-02 08:09:03,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:03,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730143240] [2024-12-02 08:09:03,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730143240] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:03,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:03,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:09:03,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704885571] [2024-12-02 08:09:03,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:03,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:09:03,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:03,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:09:03,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:09:03,879 INFO L87 Difference]: Start difference. First operand 120 states and 172 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:09:05,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:09:05,465 INFO L93 Difference]: Finished difference Result 510 states and 727 transitions. [2024-12-02 08:09:05,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 08:09:05,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 138 [2024-12-02 08:09:05,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:09:05,469 INFO L225 Difference]: With dead ends: 510 [2024-12-02 08:09:05,469 INFO L226 Difference]: Without dead ends: 393 [2024-12-02 08:09:05,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-12-02 08:09:05,471 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 390 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:09:05,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 1009 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 08:09:05,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-12-02 08:09:05,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 379. [2024-12-02 08:09:05,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 316 states have (on average 1.3481012658227849) internal successors, (426), 318 states have internal predecessors, (426), 58 states have call successors, (58), 4 states have call predecessors, (58), 4 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2024-12-02 08:09:05,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 542 transitions. [2024-12-02 08:09:05,511 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 542 transitions. Word has length 138 [2024-12-02 08:09:05,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:09:05,511 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 542 transitions. [2024-12-02 08:09:05,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:09:05,512 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 542 transitions. [2024-12-02 08:09:05,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-12-02 08:09:05,514 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:09:05,514 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:05,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:09:05,514 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:09:05,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:05,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1059652631, now seen corresponding path program 1 times [2024-12-02 08:09:05,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:05,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495729478] [2024-12-02 08:09:05,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:05,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:06,847 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-12-02 08:09:06,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:06,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495729478] [2024-12-02 08:09:06,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495729478] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:06,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:06,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:09:06,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615114898] [2024-12-02 08:09:06,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:06,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:09:06,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:06,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:09:06,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:09:06,850 INFO L87 Difference]: Start difference. First operand 379 states and 542 transitions. Second operand has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:09:07,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:09:07,618 INFO L93 Difference]: Finished difference Result 759 states and 1084 transitions. [2024-12-02 08:09:07,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:09:07,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 139 [2024-12-02 08:09:07,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:09:07,623 INFO L225 Difference]: With dead ends: 759 [2024-12-02 08:09:07,623 INFO L226 Difference]: Without dead ends: 383 [2024-12-02 08:09:07,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:09:07,625 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 69 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 08:09:07,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 641 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 08:09:07,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-12-02 08:09:07,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 379. [2024-12-02 08:09:07,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 316 states have (on average 1.3417721518987342) internal successors, (424), 318 states have internal predecessors, (424), 58 states have call successors, (58), 4 states have call predecessors, (58), 4 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2024-12-02 08:09:07,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 540 transitions. [2024-12-02 08:09:07,656 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 540 transitions. Word has length 139 [2024-12-02 08:09:07,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:09:07,656 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 540 transitions. [2024-12-02 08:09:07,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:09:07,657 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 540 transitions. [2024-12-02 08:09:07,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-12-02 08:09:07,658 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:09:07,658 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:07,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:09:07,659 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:09:07,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:07,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1059878008, now seen corresponding path program 1 times [2024-12-02 08:09:07,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:07,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510098803] [2024-12-02 08:09:07,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:07,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:08,716 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-12-02 08:09:08,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:08,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510098803] [2024-12-02 08:09:08,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510098803] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:08,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:08,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:09:08,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341047792] [2024-12-02 08:09:08,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:08,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:09:08,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:08,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:09:08,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:09:08,718 INFO L87 Difference]: Start difference. First operand 379 states and 540 transitions. Second operand has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:09:09,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:09:09,401 INFO L93 Difference]: Finished difference Result 763 states and 1086 transitions. [2024-12-02 08:09:09,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:09:09,401 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 139 [2024-12-02 08:09:09,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:09:09,404 INFO L225 Difference]: With dead ends: 763 [2024-12-02 08:09:09,404 INFO L226 Difference]: Without dead ends: 387 [2024-12-02 08:09:09,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:09:09,406 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 95 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:09:09,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 769 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 08:09:09,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-12-02 08:09:09,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 383. [2024-12-02 08:09:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 320 states have (on average 1.3375) internal successors, (428), 322 states have internal predecessors, (428), 58 states have call successors, (58), 4 states have call predecessors, (58), 4 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2024-12-02 08:09:09,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 544 transitions. [2024-12-02 08:09:09,430 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 544 transitions. Word has length 139 [2024-12-02 08:09:09,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:09:09,431 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 544 transitions. [2024-12-02 08:09:09,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:09:09,431 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 544 transitions. [2024-12-02 08:09:09,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 08:09:09,432 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:09:09,433 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:09,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 08:09:09,433 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:09:09,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:09,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1559149331, now seen corresponding path program 1 times [2024-12-02 08:09:09,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:09,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101219258] [2024-12-02 08:09:09,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:09,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-12-02 08:09:09,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:09,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101219258] [2024-12-02 08:09:09,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101219258] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:09:09,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227787848] [2024-12-02 08:09:09,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:09,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:09:09,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:09:09,578 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:09:09,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:09:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:09,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 08:09:09,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:09:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-12-02 08:09:09,852 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:09:09,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227787848] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:09,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:09:09,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2024-12-02 08:09:09,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318937357] [2024-12-02 08:09:09,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:09,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:09:09,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:09,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:09:09,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 08:09:09,854 INFO L87 Difference]: Start difference. First operand 383 states and 544 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-12-02 08:09:09,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:09:09,894 INFO L93 Difference]: Finished difference Result 775 states and 1101 transitions. [2024-12-02 08:09:09,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:09:09,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 141 [2024-12-02 08:09:09,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:09:09,898 INFO L225 Difference]: With dead ends: 775 [2024-12-02 08:09:09,898 INFO L226 Difference]: Without dead ends: 395 [2024-12-02 08:09:09,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 08:09:09,900 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 0 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:09:09,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 650 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:09:09,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-12-02 08:09:09,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2024-12-02 08:09:09,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 328 states have (on average 1.329268292682927) internal successors, (436), 330 states have internal predecessors, (436), 58 states have call successors, (58), 4 states have call predecessors, (58), 4 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2024-12-02 08:09:09,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 552 transitions. [2024-12-02 08:09:09,934 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 552 transitions. Word has length 141 [2024-12-02 08:09:09,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:09:09,934 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 552 transitions. [2024-12-02 08:09:09,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-12-02 08:09:09,934 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 552 transitions. [2024-12-02 08:09:09,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 08:09:09,935 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:09:09,935 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:09,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:09:10,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:09:10,136 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:09:10,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:10,137 INFO L85 PathProgramCache]: Analyzing trace with hash -344508669, now seen corresponding path program 1 times [2024-12-02 08:09:10,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:10,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444106309] [2024-12-02 08:09:10,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:10,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-12-02 08:09:11,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:11,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444106309] [2024-12-02 08:09:11,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444106309] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:11,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:11,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 08:09:11,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790605651] [2024-12-02 08:09:11,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:11,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 08:09:11,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:11,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 08:09:11,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 08:09:11,705 INFO L87 Difference]: Start difference. First operand 391 states and 552 transitions. Second operand has 9 states, 8 states have (on average 7.375) internal successors, (59), 9 states have internal predecessors, (59), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:09:13,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:09:13,203 INFO L93 Difference]: Finished difference Result 977 states and 1368 transitions. [2024-12-02 08:09:13,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 08:09:13,204 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 9 states have internal predecessors, (59), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 141 [2024-12-02 08:09:13,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:09:13,208 INFO L225 Difference]: With dead ends: 977 [2024-12-02 08:09:13,208 INFO L226 Difference]: Without dead ends: 589 [2024-12-02 08:09:13,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-12-02 08:09:13,210 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 338 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:09:13,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 836 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 08:09:13,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-12-02 08:09:13,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 446. [2024-12-02 08:09:13,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 383 states have (on average 1.3315926892950392) internal successors, (510), 385 states have internal predecessors, (510), 58 states have call successors, (58), 4 states have call predecessors, (58), 4 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2024-12-02 08:09:13,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 626 transitions. [2024-12-02 08:09:13,248 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 626 transitions. Word has length 141 [2024-12-02 08:09:13,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:09:13,249 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 626 transitions. [2024-12-02 08:09:13,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 9 states have internal predecessors, (59), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:09:13,249 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 626 transitions. [2024-12-02 08:09:13,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 08:09:13,251 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:09:13,251 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:13,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 08:09:13,252 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:09:13,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:13,252 INFO L85 PathProgramCache]: Analyzing trace with hash 428417814, now seen corresponding path program 1 times [2024-12-02 08:09:13,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:13,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229311801] [2024-12-02 08:09:13,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:13,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-12-02 08:09:14,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:14,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229311801] [2024-12-02 08:09:14,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229311801] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:14,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:14,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 08:09:14,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310195843] [2024-12-02 08:09:14,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:14,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 08:09:14,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:14,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 08:09:14,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 08:09:14,515 INFO L87 Difference]: Start difference. First operand 446 states and 626 transitions. Second operand has 11 states, 9 states have (on average 6.555555555555555) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 08:09:15,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:09:15,569 INFO L93 Difference]: Finished difference Result 1180 states and 1634 transitions. [2024-12-02 08:09:15,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 08:09:15,570 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.555555555555555) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 3 states have call successors, (17) Word has length 141 [2024-12-02 08:09:15,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:09:15,572 INFO L225 Difference]: With dead ends: 1180 [2024-12-02 08:09:15,572 INFO L226 Difference]: Without dead ends: 737 [2024-12-02 08:09:15,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-12-02 08:09:15,573 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 234 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:09:15,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 976 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 08:09:15,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2024-12-02 08:09:15,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 540. [2024-12-02 08:09:15,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 463 states have (on average 1.3218142548596112) internal successors, (612), 467 states have internal predecessors, (612), 68 states have call successors, (68), 8 states have call predecessors, (68), 8 states have return successors, (68), 64 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 08:09:15,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 748 transitions. [2024-12-02 08:09:15,619 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 748 transitions. Word has length 141 [2024-12-02 08:09:15,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:09:15,620 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 748 transitions. [2024-12-02 08:09:15,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.555555555555555) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 08:09:15,620 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 748 transitions. [2024-12-02 08:09:15,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 08:09:15,623 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:09:15,623 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:15,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 08:09:15,623 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:09:15,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:15,624 INFO L85 PathProgramCache]: Analyzing trace with hash -592650540, now seen corresponding path program 1 times [2024-12-02 08:09:15,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:15,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383046332] [2024-12-02 08:09:15,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:15,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:16,804 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-12-02 08:09:16,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:16,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383046332] [2024-12-02 08:09:16,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383046332] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:16,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:16,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:09:16,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460523244] [2024-12-02 08:09:16,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:16,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:09:16,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:16,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:09:16,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:09:16,805 INFO L87 Difference]: Start difference. First operand 540 states and 748 transitions. Second operand has 7 states, 5 states have (on average 11.8) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 08:09:17,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:09:17,473 INFO L93 Difference]: Finished difference Result 1096 states and 1515 transitions. [2024-12-02 08:09:17,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:09:17,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 11.8) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 3 states have call successors, (17) Word has length 141 [2024-12-02 08:09:17,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:09:17,477 INFO L225 Difference]: With dead ends: 1096 [2024-12-02 08:09:17,477 INFO L226 Difference]: Without dead ends: 559 [2024-12-02 08:09:17,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:09:17,479 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 71 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:09:17,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 838 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 08:09:17,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-12-02 08:09:17,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 540. [2024-12-02 08:09:17,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 463 states have (on average 1.3131749460043196) internal successors, (608), 467 states have internal predecessors, (608), 68 states have call successors, (68), 8 states have call predecessors, (68), 8 states have return successors, (68), 64 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 08:09:17,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 744 transitions. [2024-12-02 08:09:17,534 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 744 transitions. Word has length 141 [2024-12-02 08:09:17,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:09:17,535 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 744 transitions. [2024-12-02 08:09:17,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 11.8) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 08:09:17,535 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 744 transitions. [2024-12-02 08:09:17,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 08:09:17,537 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:09:17,537 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:17,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 08:09:17,537 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:09:17,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:17,538 INFO L85 PathProgramCache]: Analyzing trace with hash 798894449, now seen corresponding path program 1 times [2024-12-02 08:09:17,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:17,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347475745] [2024-12-02 08:09:17,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:17,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:18,656 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-12-02 08:09:18,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:18,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347475745] [2024-12-02 08:09:18,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347475745] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:18,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:18,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:09:18,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855964516] [2024-12-02 08:09:18,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:18,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:09:18,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:18,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:09:18,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:09:18,658 INFO L87 Difference]: Start difference. First operand 540 states and 744 transitions. Second operand has 7 states, 5 states have (on average 12.2) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 08:09:19,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:09:19,444 INFO L93 Difference]: Finished difference Result 1094 states and 1499 transitions. [2024-12-02 08:09:19,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:09:19,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.2) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 3 states have call successors, (17) Word has length 143 [2024-12-02 08:09:19,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:09:19,447 INFO L225 Difference]: With dead ends: 1094 [2024-12-02 08:09:19,447 INFO L226 Difference]: Without dead ends: 557 [2024-12-02 08:09:19,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:09:19,448 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 65 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 08:09:19,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 602 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 08:09:19,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-12-02 08:09:19,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 472. [2024-12-02 08:09:19,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 405 states have (on average 1.308641975308642) internal successors, (530), 407 states have internal predecessors, (530), 58 states have call successors, (58), 8 states have call predecessors, (58), 8 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2024-12-02 08:09:19,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 646 transitions. [2024-12-02 08:09:19,487 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 646 transitions. Word has length 143 [2024-12-02 08:09:19,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:09:19,487 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 646 transitions. [2024-12-02 08:09:19,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.2) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 08:09:19,488 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 646 transitions. [2024-12-02 08:09:19,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 08:09:19,489 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:09:19,489 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:19,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 08:09:19,489 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:09:19,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:19,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1442242302, now seen corresponding path program 1 times [2024-12-02 08:09:19,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:19,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106378072] [2024-12-02 08:09:19,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:19,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:20,196 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-12-02 08:09:20,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:20,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106378072] [2024-12-02 08:09:20,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106378072] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:20,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:20,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:09:20,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849840792] [2024-12-02 08:09:20,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:20,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:09:20,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:20,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:09:20,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:09:20,198 INFO L87 Difference]: Start difference. First operand 472 states and 646 transitions. Second operand has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:09:20,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:09:20,784 INFO L93 Difference]: Finished difference Result 1103 states and 1503 transitions. [2024-12-02 08:09:20,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:09:20,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 143 [2024-12-02 08:09:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:09:20,787 INFO L225 Difference]: With dead ends: 1103 [2024-12-02 08:09:20,787 INFO L226 Difference]: Without dead ends: 634 [2024-12-02 08:09:20,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:09:20,789 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 84 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:09:20,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1213 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 08:09:20,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-12-02 08:09:20,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 630. [2024-12-02 08:09:20,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 539 states have (on average 1.2968460111317255) internal successors, (699), 543 states have internal predecessors, (699), 78 states have call successors, (78), 12 states have call predecessors, (78), 12 states have return successors, (78), 74 states have call predecessors, (78), 78 states have call successors, (78) [2024-12-02 08:09:20,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 855 transitions. [2024-12-02 08:09:20,827 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 855 transitions. Word has length 143 [2024-12-02 08:09:20,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:09:20,828 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 855 transitions. [2024-12-02 08:09:20,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:09:20,828 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 855 transitions. [2024-12-02 08:09:20,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 08:09:20,829 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:09:20,829 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:20,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 08:09:20,829 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:09:20,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:20,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1091036220, now seen corresponding path program 1 times [2024-12-02 08:09:20,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:20,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043990111] [2024-12-02 08:09:20,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:20,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:21,984 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-12-02 08:09:21,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:21,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043990111] [2024-12-02 08:09:21,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043990111] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:21,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:21,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 08:09:21,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388493645] [2024-12-02 08:09:21,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:21,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 08:09:21,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:21,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 08:09:21,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:09:21,986 INFO L87 Difference]: Start difference. First operand 630 states and 855 transitions. Second operand has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 08:09:23,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:09:23,328 INFO L93 Difference]: Finished difference Result 1472 states and 2007 transitions. [2024-12-02 08:09:23,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 08:09:23,328 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 144 [2024-12-02 08:09:23,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:09:23,332 INFO L225 Difference]: With dead ends: 1472 [2024-12-02 08:09:23,332 INFO L226 Difference]: Without dead ends: 845 [2024-12-02 08:09:23,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-12-02 08:09:23,333 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 217 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:09:23,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 839 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 08:09:23,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-12-02 08:09:23,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 843. [2024-12-02 08:09:23,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 719 states have (on average 1.3045897079276774) internal successors, (938), 724 states have internal predecessors, (938), 107 states have call successors, (107), 16 states have call predecessors, (107), 16 states have return successors, (107), 102 states have call predecessors, (107), 107 states have call successors, (107) [2024-12-02 08:09:23,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1152 transitions. [2024-12-02 08:09:23,390 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1152 transitions. Word has length 144 [2024-12-02 08:09:23,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:09:23,391 INFO L471 AbstractCegarLoop]: Abstraction has 843 states and 1152 transitions. [2024-12-02 08:09:23,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 08:09:23,391 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1152 transitions. [2024-12-02 08:09:23,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 08:09:23,392 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:09:23,392 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:23,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 08:09:23,393 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:09:23,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:23,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1209786370, now seen corresponding path program 1 times [2024-12-02 08:09:23,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:23,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191074943] [2024-12-02 08:09:23,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:23,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:23,991 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-12-02 08:09:23,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:23,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191074943] [2024-12-02 08:09:23,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191074943] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:09:23,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:09:23,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:09:23,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862092750] [2024-12-02 08:09:23,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:23,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:09:23,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:23,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:09:23,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:09:23,993 INFO L87 Difference]: Start difference. First operand 843 states and 1152 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:09:24,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:09:24,438 INFO L93 Difference]: Finished difference Result 1573 states and 2146 transitions. [2024-12-02 08:09:24,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:09:24,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2024-12-02 08:09:24,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:09:24,442 INFO L225 Difference]: With dead ends: 1573 [2024-12-02 08:09:24,442 INFO L226 Difference]: Without dead ends: 733 [2024-12-02 08:09:24,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:09:24,444 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 130 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:09:24,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 488 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 08:09:24,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2024-12-02 08:09:24,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 728. [2024-12-02 08:09:24,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 604 states have (on average 1.2847682119205297) internal successors, (776), 609 states have internal predecessors, (776), 107 states have call successors, (107), 16 states have call predecessors, (107), 16 states have return successors, (107), 102 states have call predecessors, (107), 107 states have call successors, (107) [2024-12-02 08:09:24,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 990 transitions. [2024-12-02 08:09:24,485 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 990 transitions. Word has length 144 [2024-12-02 08:09:24,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:09:24,485 INFO L471 AbstractCegarLoop]: Abstraction has 728 states and 990 transitions. [2024-12-02 08:09:24,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:09:24,485 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 990 transitions. [2024-12-02 08:09:24,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 08:09:24,486 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:09:24,486 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:24,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 08:09:24,486 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:09:24,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:24,487 INFO L85 PathProgramCache]: Analyzing trace with hash -741564834, now seen corresponding path program 1 times [2024-12-02 08:09:24,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:24,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079413023] [2024-12-02 08:09:24,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:24,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:25,759 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-12-02 08:09:25,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:25,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079413023] [2024-12-02 08:09:25,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079413023] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:09:25,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756579661] [2024-12-02 08:09:25,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:25,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:09:25,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:09:25,761 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:09:25,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 08:09:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:25,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-12-02 08:09:25,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:09:26,057 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 70 treesize of output 69 [2024-12-02 08:09:26,853 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 137 treesize of output 116 [2024-12-02 08:09:27,935 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 137 treesize of output 116 [2024-12-02 08:09:29,252 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 137 treesize of output 116 [2024-12-02 08:09:33,327 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 153 treesize of output 128 [2024-12-02 08:09:35,170 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 159 treesize of output 132 [2024-12-02 08:09:36,898 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 165 treesize of output 136 [2024-12-02 08:09:38,027 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 171 treesize of output 140 [2024-12-02 08:09:38,997 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 171 treesize of output 140 [2024-12-02 08:09:39,963 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 171 treesize of output 140 [2024-12-02 08:09:41,182 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 188 treesize of output 155 [2024-12-02 08:09:43,611 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 193 treesize of output 155 [2024-12-02 08:09:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 6 proven. 444 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-12-02 08:09:43,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:09:44,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756579661] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:09:44,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:09:44,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 25 [2024-12-02 08:09:44,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013610152] [2024-12-02 08:09:44,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:09:44,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 08:09:44,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:44,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 08:09:44,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=791, Unknown=0, NotChecked=0, Total=930 [2024-12-02 08:09:44,835 INFO L87 Difference]: Start difference. First operand 728 states and 990 transitions. Second operand has 25 states, 23 states have (on average 5.434782608695652) internal successors, (125), 24 states have internal predecessors, (125), 9 states have call successors, (34), 6 states have call predecessors, (34), 8 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2024-12-02 08:10:19,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:10:19,518 INFO L93 Difference]: Finished difference Result 2239 states and 3004 transitions. [2024-12-02 08:10:19,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-12-02 08:10:19,519 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 5.434782608695652) internal successors, (125), 24 states have internal predecessors, (125), 9 states have call successors, (34), 6 states have call predecessors, (34), 8 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) Word has length 145 [2024-12-02 08:10:19,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:10:19,522 INFO L225 Difference]: With dead ends: 2239 [2024-12-02 08:10:19,523 INFO L226 Difference]: Without dead ends: 1672 [2024-12-02 08:10:19,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 162 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=579, Invalid=3711, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 08:10:19,524 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 580 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 2383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:10:19,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 1254 Invalid, 2383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 25.5s Time] [2024-12-02 08:10:19,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2024-12-02 08:10:19,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1306. [2024-12-02 08:10:19,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1086 states have (on average 1.2882136279926335) internal successors, (1399), 1093 states have internal predecessors, (1399), 185 states have call successors, (185), 34 states have call predecessors, (185), 34 states have return successors, (185), 178 states have call predecessors, (185), 185 states have call successors, (185) [2024-12-02 08:10:19,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 1769 transitions. [2024-12-02 08:10:19,651 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 1769 transitions. Word has length 145 [2024-12-02 08:10:19,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:10:19,651 INFO L471 AbstractCegarLoop]: Abstraction has 1306 states and 1769 transitions. [2024-12-02 08:10:19,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 5.434782608695652) internal successors, (125), 24 states have internal predecessors, (125), 9 states have call successors, (34), 6 states have call predecessors, (34), 8 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2024-12-02 08:10:19,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 1769 transitions. [2024-12-02 08:10:19,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 08:10:19,653 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:10:19,653 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:10:19,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 08:10:19,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05a0e47-e3b4-4b9a-a660-51fdd0c62e5f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 08:10:19,854 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:10:19,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:10:19,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1559213284, now seen corresponding path program 1 times [2024-12-02 08:10:19,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:10:19,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346609392] [2024-12-02 08:10:19,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:10:19,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:10:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat