./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-80.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_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/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_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-80.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/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_5f43d49c-c859-4ea7-b8b7-66601a908d84/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 511db833c8808b53f89aa03d82cf934769dba4f9f9153f0cd5ce6daaa43720ad --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:45:50,650 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:45:50,708 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:45:50,713 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:45:50,713 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:45:50,736 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:45:50,736 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:45:50,737 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:45:50,737 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:45:50,737 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:45:50,737 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:45:50,737 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:45:50,738 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:45:50,738 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:45:50,738 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:45:50,738 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:45:50,738 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:45:50,738 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:45:50,738 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:45:50,738 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:45:50,738 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:45:50,738 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:45:50,738 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:45:50,739 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:45:50,739 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:45:50,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:45:50,739 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:45:50,739 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:45:50,739 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:45:50,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:45:50,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:45:50,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:45:50,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:45:50,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:45:50,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:45:50,740 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:45:50,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:45:50,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:45:50,740 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:45:50,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:45:50,740 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:45:50,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:45:50,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:45:50,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:45:50,740 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:45:50,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:45:50,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:45:50,741 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:45:50,741 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_5f43d49c-c859-4ea7-b8b7-66601a908d84/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 -> 511db833c8808b53f89aa03d82cf934769dba4f9f9153f0cd5ce6daaa43720ad [2024-12-02 07:45:50,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:45:50,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:45:50,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:45:50,992 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:45:50,993 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:45:50,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-80.i [2024-12-02 07:45:53,722 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/data/e89eb3285/1c9d645e31214067b567ec21fe97941b/FLAGe66edf58b [2024-12-02 07:45:53,941 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:45:53,941 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-80.i [2024-12-02 07:45:53,950 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/data/e89eb3285/1c9d645e31214067b567ec21fe97941b/FLAGe66edf58b [2024-12-02 07:45:54,306 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/data/e89eb3285/1c9d645e31214067b567ec21fe97941b [2024-12-02 07:45:54,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:45:54,309 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:45:54,310 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:45:54,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:45:54,314 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:45:54,314 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:45:54" (1/1) ... [2024-12-02 07:45:54,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da58228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:54, skipping insertion in model container [2024-12-02 07:45:54,315 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:45:54" (1/1) ... [2024-12-02 07:45:54,331 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:45:54,441 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_5f43d49c-c859-4ea7-b8b7-66601a908d84/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-80.i[916,929] [2024-12-02 07:45:54,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:45:54,515 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:45:54,523 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_5f43d49c-c859-4ea7-b8b7-66601a908d84/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-80.i[916,929] [2024-12-02 07:45:54,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:45:54,592 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:45:54,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:54 WrapperNode [2024-12-02 07:45:54,592 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:45:54,593 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:45:54,593 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:45:54,593 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:45:54,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:54" (1/1) ... [2024-12-02 07:45:54,613 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:54" (1/1) ... [2024-12-02 07:45:54,653 INFO L138 Inliner]: procedures = 30, calls = 228, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 763 [2024-12-02 07:45:54,653 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:45:54,654 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:45:54,654 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:45:54,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:45:54,664 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:54" (1/1) ... [2024-12-02 07:45:54,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:54" (1/1) ... [2024-12-02 07:45:54,671 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:54" (1/1) ... [2024-12-02 07:45:54,678 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-12-02 07:45:54,678 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:54" (1/1) ... [2024-12-02 07:45:54,679 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:54" (1/1) ... [2024-12-02 07:45:54,706 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:54" (1/1) ... [2024-12-02 07:45:54,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:54" (1/1) ... [2024-12-02 07:45:54,714 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:54" (1/1) ... [2024-12-02 07:45:54,717 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:54" (1/1) ... [2024-12-02 07:45:54,720 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:54" (1/1) ... [2024-12-02 07:45:54,726 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:45:54,727 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:45:54,727 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:45:54,727 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:45:54,728 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:54" (1/1) ... [2024-12-02 07:45:54,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:45:54,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:45:54,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:45:54,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:45:54,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:45:54,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-12-02 07:45:54,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-12-02 07:45:54,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-02 07:45:54,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-12-02 07:45:54,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-12-02 07:45:54,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-02 07:45:54,779 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 07:45:54,779 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 07:45:54,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-02 07:45:54,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:45:54,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:45:54,894 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:45:54,895 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:45:55,586 INFO L? ?]: Removed 236 outVars from TransFormulas that were not future-live. [2024-12-02 07:45:55,586 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:45:55,598 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:45:55,599 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 07:45:55,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:45:55 BoogieIcfgContainer [2024-12-02 07:45:55,599 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:45:55,602 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:45:55,602 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:45:55,607 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:45:55,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:45:54" (1/3) ... [2024-12-02 07:45:55,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705fe5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:45:55, skipping insertion in model container [2024-12-02 07:45:55,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:54" (2/3) ... [2024-12-02 07:45:55,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705fe5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:45:55, skipping insertion in model container [2024-12-02 07:45:55,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:45:55" (3/3) ... [2024-12-02 07:45:55,609 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-80.i [2024-12-02 07:45:55,624 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:45:55,626 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-s_file-80.i that has 2 procedures, 154 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 07:45:55,675 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:45:55,687 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;@713237af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:45:55,687 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:45:55,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 134 states have (on average 1.455223880597015) internal successors, (195), 135 states have internal predecessors, (195), 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 07:45:55,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 07:45:55,702 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:45:55,702 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:45:55,703 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:45:55,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:45:55,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1448501280, now seen corresponding path program 1 times [2024-12-02 07:45:55,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:45:55,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92143848] [2024-12-02 07:45:55,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:55,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:45:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:56,056 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 07:45:56,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:45:56,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92143848] [2024-12-02 07:45:56,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92143848] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:45:56,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946986959] [2024-12-02 07:45:56,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:56,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:45:56,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:45:56,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:45:56,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:45:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:56,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 07:45:56,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:45:56,397 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 07:45:56,398 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:45:56,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946986959] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:45:56,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:45:56,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 07:45:56,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865230546] [2024-12-02 07:45:56,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:45:56,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:45:56,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:45:56,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:45:56,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:45:56,425 INFO L87 Difference]: Start difference. First operand has 154 states, 134 states have (on average 1.455223880597015) internal successors, (195), 135 states have internal predecessors, (195), 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 36.5) internal successors, (73), 2 states have internal predecessors, (73), 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 07:45:56,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:45:56,452 INFO L93 Difference]: Finished difference Result 301 states and 469 transitions. [2024-12-02 07:45:56,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:45:56,454 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 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 153 [2024-12-02 07:45:56,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:45:56,459 INFO L225 Difference]: With dead ends: 301 [2024-12-02 07:45:56,459 INFO L226 Difference]: Without dead ends: 150 [2024-12-02 07:45:56,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 154 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 07:45:56,464 INFO L435 NwaCegarLoop]: 222 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, 222 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 07:45:56,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:45:56,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-12-02 07:45:56,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-12-02 07:45:56,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 131 states have (on average 1.4351145038167938) internal successors, (188), 131 states have internal predecessors, (188), 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 07:45:56,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 222 transitions. [2024-12-02 07:45:56,503 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 222 transitions. Word has length 153 [2024-12-02 07:45:56,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:45:56,503 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 222 transitions. [2024-12-02 07:45:56,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 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 07:45:56,504 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 222 transitions. [2024-12-02 07:45:56,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 07:45:56,507 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:45:56,507 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:45:56,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:45:56,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:45:56,708 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:45:56,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:45:56,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1664099722, now seen corresponding path program 1 times [2024-12-02 07:45:56,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:45:56,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980414439] [2024-12-02 07:45:56,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:56,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:45:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:57,069 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 07:45:57,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:45:57,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980414439] [2024-12-02 07:45:57,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980414439] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:45:57,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:45:57,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:45:57,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058554415] [2024-12-02 07:45:57,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:45:57,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:45:57,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:45:57,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:45:57,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:45:57,072 INFO L87 Difference]: Start difference. First operand 150 states and 222 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 07:45:57,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:45:57,126 INFO L93 Difference]: Finished difference Result 299 states and 444 transitions. [2024-12-02 07:45:57,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:45:57,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 153 [2024-12-02 07:45:57,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:45:57,129 INFO L225 Difference]: With dead ends: 299 [2024-12-02 07:45:57,129 INFO L226 Difference]: Without dead ends: 152 [2024-12-02 07:45:57,130 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 07:45:57,130 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 649 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 07:45:57,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:45:57,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-12-02 07:45:57,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2024-12-02 07:45:57,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 133 states have (on average 1.4285714285714286) internal successors, (190), 133 states have internal predecessors, (190), 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 07:45:57,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 224 transitions. [2024-12-02 07:45:57,141 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 224 transitions. Word has length 153 [2024-12-02 07:45:57,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:45:57,143 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 224 transitions. [2024-12-02 07:45:57,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 07:45:57,143 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 224 transitions. [2024-12-02 07:45:57,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 07:45:57,145 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:45:57,145 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:45:57,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:45:57,145 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:45:57,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:45:57,146 INFO L85 PathProgramCache]: Analyzing trace with hash -719825016, now seen corresponding path program 1 times [2024-12-02 07:45:57,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:45:57,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305661358] [2024-12-02 07:45:57,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:57,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:45:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:57,521 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 07:45:57,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:45:57,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305661358] [2024-12-02 07:45:57,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305661358] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:45:57,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197416065] [2024-12-02 07:45:57,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:57,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:45:57,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:45:57,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:45:57,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:45:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:57,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:45:57,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:45:57,900 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 07:45:57,901 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:45:57,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197416065] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:45:57,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:45:57,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-12-02 07:45:57,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111468940] [2024-12-02 07:45:57,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:45:57,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:45:57,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:45:57,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:45:57,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:45:57,903 INFO L87 Difference]: Start difference. First operand 152 states and 224 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 07:45:57,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:45:57,940 INFO L93 Difference]: Finished difference Result 304 states and 449 transitions. [2024-12-02 07:45:57,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:45:57,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 153 [2024-12-02 07:45:57,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:45:57,943 INFO L225 Difference]: With dead ends: 304 [2024-12-02 07:45:57,943 INFO L226 Difference]: Without dead ends: 155 [2024-12-02 07:45:57,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:45:57,945 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:45:57,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 647 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:45:57,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-12-02 07:45:57,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2024-12-02 07:45:57,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 135 states have (on average 1.4222222222222223) internal successors, (192), 135 states have internal predecessors, (192), 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 07:45:57,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 226 transitions. [2024-12-02 07:45:57,958 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 226 transitions. Word has length 153 [2024-12-02 07:45:57,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:45:57,959 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 226 transitions. [2024-12-02 07:45:57,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 07:45:57,960 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 226 transitions. [2024-12-02 07:45:57,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 07:45:57,962 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:45:57,962 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:45:57,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:45:58,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:45:58,163 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:45:58,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:45:58,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1055182346, now seen corresponding path program 1 times [2024-12-02 07:45:58,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:45:58,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826847374] [2024-12-02 07:45:58,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:58,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:45:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:58,581 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 07:45:58,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:45:58,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826847374] [2024-12-02 07:45:58,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826847374] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:45:58,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527224157] [2024-12-02 07:45:58,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:58,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:45:58,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:45:58,583 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:45:58,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:45:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:58,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:45:58,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:45:58,908 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 07:45:58,908 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:45:58,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527224157] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:45:58,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:45:58,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-12-02 07:45:58,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485867184] [2024-12-02 07:45:58,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:45:58,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:45:58,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:45:58,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:45:58,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:45:58,910 INFO L87 Difference]: Start difference. First operand 154 states and 226 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 07:45:58,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:45:58,939 INFO L93 Difference]: Finished difference Result 308 states and 453 transitions. [2024-12-02 07:45:58,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:45:58,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 153 [2024-12-02 07:45:58,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:45:58,941 INFO L225 Difference]: With dead ends: 308 [2024-12-02 07:45:58,941 INFO L226 Difference]: Without dead ends: 157 [2024-12-02 07:45:58,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:45:58,942 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:45:58,943 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:45:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-12-02 07:45:58,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2024-12-02 07:45:58,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 137 states have (on average 1.416058394160584) internal successors, (194), 137 states have internal predecessors, (194), 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 07:45:58,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 228 transitions. [2024-12-02 07:45:58,952 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 228 transitions. Word has length 153 [2024-12-02 07:45:58,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:45:58,952 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 228 transitions. [2024-12-02 07:45:58,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 07:45:58,953 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 228 transitions. [2024-12-02 07:45:58,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 07:45:58,954 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:45:58,955 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:45:58,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:45:59,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:45:59,155 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:45:59,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:45:59,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1057029388, now seen corresponding path program 1 times [2024-12-02 07:45:59,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:45:59,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868657103] [2024-12-02 07:45:59,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:59,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:45:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:59,438 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 07:45:59,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:45:59,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868657103] [2024-12-02 07:45:59,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868657103] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:45:59,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208379506] [2024-12-02 07:45:59,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:59,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:45:59,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:45:59,441 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:45:59,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:45:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:59,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:45:59,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:45:59,786 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 07:45:59,787 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:45:59,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208379506] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:45:59,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:45:59,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-12-02 07:45:59,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410687212] [2024-12-02 07:45:59,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:45:59,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:45:59,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:45:59,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:45:59,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:45:59,789 INFO L87 Difference]: Start difference. First operand 156 states and 228 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 07:45:59,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:45:59,819 INFO L93 Difference]: Finished difference Result 311 states and 456 transitions. [2024-12-02 07:45:59,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:45:59,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 153 [2024-12-02 07:45:59,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:45:59,821 INFO L225 Difference]: With dead ends: 311 [2024-12-02 07:45:59,821 INFO L226 Difference]: Without dead ends: 158 [2024-12-02 07:45:59,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:45:59,823 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 649 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 07:45:59,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:45:59,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-12-02 07:45:59,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2024-12-02 07:45:59,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 139 states have (on average 1.410071942446043) internal successors, (196), 139 states have internal predecessors, (196), 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 07:45:59,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 230 transitions. [2024-12-02 07:45:59,832 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 230 transitions. Word has length 153 [2024-12-02 07:45:59,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:45:59,832 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 230 transitions. [2024-12-02 07:45:59,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 07:45:59,832 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 230 transitions. [2024-12-02 07:45:59,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 07:45:59,834 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:45:59,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:45:59,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 07:46:00,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f43d49c-c859-4ea7-b8b7-66601a908d84/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:46:00,035 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:00,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:00,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1686736903, now seen corresponding path program 1 times [2024-12-02 07:46:00,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:00,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658090594] [2024-12-02 07:46:00,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:00,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:00,614 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 07:46:00,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:00,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658090594] [2024-12-02 07:46:00,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658090594] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:00,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:00,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:46:00,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183248878] [2024-12-02 07:46:00,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:00,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:46:00,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:00,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:46:00,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:46:00,615 INFO L87 Difference]: Start difference. First operand 158 states and 230 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 07:46:00,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:00,930 INFO L93 Difference]: Finished difference Result 317 states and 464 transitions. [2024-12-02 07:46:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:46:00,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 155 [2024-12-02 07:46:00,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:00,932 INFO L225 Difference]: With dead ends: 317 [2024-12-02 07:46:00,932 INFO L226 Difference]: Without dead ends: 162 [2024-12-02 07:46:00,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:46:00,933 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 2 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:00,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 754 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:46:00,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-12-02 07:46:00,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2024-12-02 07:46:00,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 142 states have (on average 1.408450704225352) internal successors, (200), 142 states have internal predecessors, (200), 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 07:46:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 234 transitions. [2024-12-02 07:46:00,942 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 234 transitions. Word has length 155 [2024-12-02 07:46:00,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:00,943 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 234 transitions. [2024-12-02 07:46:00,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 07:46:00,943 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 234 transitions. [2024-12-02 07:46:00,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 07:46:00,945 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:00,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:46:00,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:46:00,945 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:00,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:00,946 INFO L85 PathProgramCache]: Analyzing trace with hash -118701431, now seen corresponding path program 1 times [2024-12-02 07:46:00,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:00,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713270153] [2024-12-02 07:46:00,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:00,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:03,110 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 07:46:03,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:03,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713270153] [2024-12-02 07:46:03,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713270153] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:03,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:03,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:46:03,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387019775] [2024-12-02 07:46:03,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:03,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:46:03,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:03,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:46:03,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:46:03,112 INFO L87 Difference]: Start difference. First operand 161 states and 234 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 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 07:46:05,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:05,465 INFO L93 Difference]: Finished difference Result 692 states and 996 transitions. [2024-12-02 07:46:05,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 07:46:05,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 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 155 [2024-12-02 07:46:05,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:05,468 INFO L225 Difference]: With dead ends: 692 [2024-12-02 07:46:05,468 INFO L226 Difference]: Without dead ends: 534 [2024-12-02 07:46:05,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-12-02 07:46:05,469 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 927 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:05,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 666 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 07:46:05,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-12-02 07:46:05,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 343. [2024-12-02 07:46:05,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 295 states have (on average 1.3898305084745763) internal successors, (410), 297 states have internal predecessors, (410), 43 states have call successors, (43), 4 states have call predecessors, (43), 4 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) [2024-12-02 07:46:05,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 496 transitions. [2024-12-02 07:46:05,497 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 496 transitions. Word has length 155 [2024-12-02 07:46:05,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:05,498 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 496 transitions. [2024-12-02 07:46:05,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 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 07:46:05,498 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 496 transitions. [2024-12-02 07:46:05,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 07:46:05,500 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:05,500 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:46:05,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:46:05,500 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:05,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:05,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2112846137, now seen corresponding path program 1 times [2024-12-02 07:46:05,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:05,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633799136] [2024-12-02 07:46:05,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:05,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat