./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC --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 6c2afc665f9ec9bbf6f489827c9a63486fda067f850cc8b511cbd83d8b773bd8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:35:09,915 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:35:10,023 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 22:35:10,032 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:35:10,035 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:35:10,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:35:10,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:35:10,078 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:35:10,078 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:35:10,079 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:35:10,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:35:10,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:35:10,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:35:10,081 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:35:10,081 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:35:10,082 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:35:10,082 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:35:10,083 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:35:10,083 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:35:10,083 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:35:10,083 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:35:10,083 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:35:10,083 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:35:10,083 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:35:10,084 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:35:10,084 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:35:10,084 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:35:10,084 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:35:10,084 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:35:10,084 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:35:10,084 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:35:10,084 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:35:10,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:35:10,085 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:35:10,086 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:35:10,086 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:35:10,086 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:35:10,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:35:10,086 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:35:10,087 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:35:10,087 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:35:10,087 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:35:10,087 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:35:10,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:35:10,088 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:35:10,088 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:35:10,088 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:35:10,088 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:35:10,088 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_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC 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 -> 6c2afc665f9ec9bbf6f489827c9a63486fda067f850cc8b511cbd83d8b773bd8 [2024-11-23 22:35:10,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:35:10,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:35:10,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:35:10,556 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:35:10,557 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:35:10,558 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-2.i [2024-11-23 22:35:14,264 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/data/edaaa2fd0/74d82f4fd7c04d859fc10c5d1d529eeb/FLAGc781adbf5 [2024-11-23 22:35:14,738 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:35:14,739 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-2.i [2024-11-23 22:35:14,754 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/data/edaaa2fd0/74d82f4fd7c04d859fc10c5d1d529eeb/FLAGc781adbf5 [2024-11-23 22:35:14,781 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/data/edaaa2fd0/74d82f4fd7c04d859fc10c5d1d529eeb [2024-11-23 22:35:14,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:35:14,787 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:35:14,790 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:35:14,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:35:14,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:35:14,803 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:14" (1/1) ... [2024-11-23 22:35:14,807 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58c11bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:14, skipping insertion in model container [2024-11-23 22:35:14,807 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:14" (1/1) ... [2024-11-23 22:35:14,831 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:35:15,033 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_157d8081-4c37-4d5a-b9e3-86c5bcb90892/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-2.i[915,928] [2024-11-23 22:35:15,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:35:15,150 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:35:15,161 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_157d8081-4c37-4d5a-b9e3-86c5bcb90892/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-2.i[915,928] [2024-11-23 22:35:15,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:35:15,289 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:35:15,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15 WrapperNode [2024-11-23 22:35:15,290 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:35:15,292 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:35:15,292 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:35:15,293 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:35:15,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,330 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,408 INFO L138 Inliner]: procedures = 29, calls = 157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 513 [2024-11-23 22:35:15,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:35:15,413 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:35:15,413 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:35:15,413 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:35:15,427 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,434 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,475 INFO L175 MemorySlicer]: Split 131 memory accesses to 4 slices as follows [2, 8, 31, 90]. 69 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 1, 3, 6]. The 15 writes are split as follows [0, 1, 5, 9]. [2024-11-23 22:35:15,476 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,476 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,501 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,504 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,510 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,517 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:35:15,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:35:15,525 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:35:15,526 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:35:15,527 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:35:15,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:35:15,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:35:15,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:35:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:35:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-11-23 22:35:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-11-23 22:35:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-11-23 22:35:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-11-23 22:35:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 22:35:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 22:35:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 22:35:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 22:35:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-11-23 22:35:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-11-23 22:35:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-11-23 22:35:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-11-23 22:35:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 22:35:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 22:35:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 22:35:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 22:35:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-11-23 22:35:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-11-23 22:35:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-11-23 22:35:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-11-23 22:35:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 22:35:15,623 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 22:35:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:35:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 22:35:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 22:35:15,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 22:35:15,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:35:15,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:35:15,844 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:35:15,846 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:35:16,610 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-23 22:35:16,610 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:35:16,625 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:35:16,627 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 22:35:16,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:35:16 BoogieIcfgContainer [2024-11-23 22:35:16,628 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:35:16,631 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:35:16,632 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:35:16,637 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:35:16,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:35:14" (1/3) ... [2024-11-23 22:35:16,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d82439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:35:16, skipping insertion in model container [2024-11-23 22:35:16,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (2/3) ... [2024-11-23 22:35:16,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d82439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:35:16, skipping insertion in model container [2024-11-23 22:35:16,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:35:16" (3/3) ... [2024-11-23 22:35:16,643 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-2.i [2024-11-23 22:35:16,661 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:35:16,663 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-a_file-2.i that has 2 procedures, 104 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 22:35:16,726 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:35:16,741 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;@1ba03738, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:35:16,742 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 22:35:16,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 89 states have (on average 1.4606741573033708) internal successors, (130), 90 states have internal predecessors, (130), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-23 22:35:16,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-23 22:35:16,762 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:16,763 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:16,763 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:16,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:16,770 INFO L85 PathProgramCache]: Analyzing trace with hash 717352381, now seen corresponding path program 1 times [2024-11-23 22:35:16,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:16,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671762452] [2024-11-23 22:35:16,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:16,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-23 22:35:17,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:17,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671762452] [2024-11-23 22:35:17,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671762452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:35:17,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821033099] [2024-11-23 22:35:17,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:17,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:35:17,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:35:17,154 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:35:17,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:35:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:17,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 22:35:17,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:35:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-23 22:35:17,485 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:35:17,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821033099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:17,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:35:17,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 22:35:17,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768206227] [2024-11-23 22:35:17,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:17,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 22:35:17,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:17,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 22:35:17,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:35:17,522 INFO L87 Difference]: Start difference. First operand has 104 states, 89 states have (on average 1.4606741573033708) internal successors, (130), 90 states have internal predecessors, (130), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:35:17,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:17,561 INFO L93 Difference]: Finished difference Result 201 states and 314 transitions. [2024-11-23 22:35:17,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 22:35:17,563 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2024-11-23 22:35:17,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:17,574 INFO L225 Difference]: With dead ends: 201 [2024-11-23 22:35:17,574 INFO L226 Difference]: Without dead ends: 100 [2024-11-23 22:35:17,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:35:17,584 INFO L435 NwaCegarLoop]: 147 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, 147 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 [2024-11-23 22:35:17,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:35:17,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-23 22:35:17,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-23 22:35:17,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 86 states have (on average 1.430232558139535) internal successors, (123), 86 states have internal predecessors, (123), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-23 22:35:17,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 147 transitions. [2024-11-23 22:35:17,647 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 147 transitions. Word has length 100 [2024-11-23 22:35:17,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:17,647 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 147 transitions. [2024-11-23 22:35:17,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:35:17,648 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 147 transitions. [2024-11-23 22:35:17,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-23 22:35:17,654 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:17,654 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:17,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 22:35:17,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 22:35:17,858 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:17,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:17,858 INFO L85 PathProgramCache]: Analyzing trace with hash -269428335, now seen corresponding path program 1 times [2024-11-23 22:35:17,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:17,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856568648] [2024-11-23 22:35:17,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:17,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:18,196 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:18,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:18,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856568648] [2024-11-23 22:35:18,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856568648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:18,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:18,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:35:18,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525494924] [2024-11-23 22:35:18,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:18,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:35:18,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:18,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:35:18,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:35:18,201 INFO L87 Difference]: Start difference. First operand 100 states and 147 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:35:18,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:18,269 INFO L93 Difference]: Finished difference Result 199 states and 294 transitions. [2024-11-23 22:35:18,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:35:18,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2024-11-23 22:35:18,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:18,271 INFO L225 Difference]: With dead ends: 199 [2024-11-23 22:35:18,274 INFO L226 Difference]: Without dead ends: 102 [2024-11-23 22:35:18,275 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 [2024-11-23 22:35:18,276 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 424 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 [2024-11-23 22:35:18,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 424 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:35:18,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-23 22:35:18,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-23 22:35:18,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 88 states have (on average 1.4204545454545454) internal successors, (125), 88 states have internal predecessors, (125), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-23 22:35:18,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 149 transitions. [2024-11-23 22:35:18,295 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 149 transitions. Word has length 100 [2024-11-23 22:35:18,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:18,298 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 149 transitions. [2024-11-23 22:35:18,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:35:18,299 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 149 transitions. [2024-11-23 22:35:18,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-23 22:35:18,302 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:18,302 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:18,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:35:18,302 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:18,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:18,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1594284529, now seen corresponding path program 1 times [2024-11-23 22:35:18,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:18,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379304951] [2024-11-23 22:35:18,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:18,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:18,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:18,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379304951] [2024-11-23 22:35:18,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379304951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:18,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:18,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:35:18,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29882611] [2024-11-23 22:35:18,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:18,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:35:18,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:18,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:35:18,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:35:18,511 INFO L87 Difference]: Start difference. First operand 102 states and 149 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:35:18,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:18,549 INFO L93 Difference]: Finished difference Result 202 states and 297 transitions. [2024-11-23 22:35:18,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:35:18,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 100 [2024-11-23 22:35:18,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:18,553 INFO L225 Difference]: With dead ends: 202 [2024-11-23 22:35:18,554 INFO L226 Difference]: Without dead ends: 103 [2024-11-23 22:35:18,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:35:18,555 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:18,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 286 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:35:18,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-23 22:35:18,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-23 22:35:18,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 89 states have (on average 1.4157303370786516) internal successors, (126), 89 states have internal predecessors, (126), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-23 22:35:18,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 150 transitions. [2024-11-23 22:35:18,569 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 150 transitions. Word has length 100 [2024-11-23 22:35:18,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:18,569 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 150 transitions. [2024-11-23 22:35:18,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:35:18,570 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 150 transitions. [2024-11-23 22:35:18,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-23 22:35:18,572 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:18,572 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:18,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 22:35:18,572 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:18,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:18,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1689565517, now seen corresponding path program 1 times [2024-11-23 22:35:18,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:18,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483235650] [2024-11-23 22:35:18,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:18,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:18,994 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-23 22:35:18,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:18,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483235650] [2024-11-23 22:35:18,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483235650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:35:18,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473543858] [2024-11-23 22:35:18,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:18,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:35:18,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:35:19,001 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:35:19,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 22:35:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:19,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:35:19,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:35:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:19,295 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:35:19,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473543858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:19,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:35:19,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-11-23 22:35:19,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896906893] [2024-11-23 22:35:19,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:19,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:35:19,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:19,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:35:19,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:35:19,300 INFO L87 Difference]: Start difference. First operand 103 states and 150 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:35:19,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:19,343 INFO L93 Difference]: Finished difference Result 205 states and 300 transitions. [2024-11-23 22:35:19,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:35:19,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 100 [2024-11-23 22:35:19,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:19,345 INFO L225 Difference]: With dead ends: 205 [2024-11-23 22:35:19,347 INFO L226 Difference]: Without dead ends: 105 [2024-11-23 22:35:19,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:35:19,349 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 424 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 [2024-11-23 22:35:19,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 424 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:35:19,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-23 22:35:19,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-23 22:35:19,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 91 states have (on average 1.4065934065934067) internal successors, (128), 91 states have internal predecessors, (128), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-23 22:35:19,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 152 transitions. [2024-11-23 22:35:19,367 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 152 transitions. Word has length 100 [2024-11-23 22:35:19,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:19,369 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 152 transitions. [2024-11-23 22:35:19,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:35:19,369 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 152 transitions. [2024-11-23 22:35:19,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-23 22:35:19,370 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:19,371 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:19,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 22:35:19,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:35:19,573 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:19,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:19,573 INFO L85 PathProgramCache]: Analyzing trace with hash -10795469, now seen corresponding path program 1 times [2024-11-23 22:35:19,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:19,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861644570] [2024-11-23 22:35:19,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:19,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:19,808 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:19,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:19,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861644570] [2024-11-23 22:35:19,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861644570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:19,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:19,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:35:19,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451830790] [2024-11-23 22:35:19,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:19,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:35:19,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:19,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:35:19,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:35:19,813 INFO L87 Difference]: Start difference. First operand 105 states and 152 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:35:19,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:19,854 INFO L93 Difference]: Finished difference Result 252 states and 368 transitions. [2024-11-23 22:35:19,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:35:19,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 103 [2024-11-23 22:35:19,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:19,857 INFO L225 Difference]: With dead ends: 252 [2024-11-23 22:35:19,857 INFO L226 Difference]: Without dead ends: 150 [2024-11-23 22:35:19,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:35:19,858 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 60 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:19,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 288 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:35:19,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-23 22:35:19,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 123. [2024-11-23 22:35:19,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 109 states have (on average 1.4311926605504588) internal successors, (156), 109 states have internal predecessors, (156), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-23 22:35:19,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 180 transitions. [2024-11-23 22:35:19,870 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 180 transitions. Word has length 103 [2024-11-23 22:35:19,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:19,872 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 180 transitions. [2024-11-23 22:35:19,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:35:19,872 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 180 transitions. [2024-11-23 22:35:19,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-23 22:35:19,874 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:19,874 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:19,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 22:35:19,874 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:19,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:19,875 INFO L85 PathProgramCache]: Analyzing trace with hash -408656968, now seen corresponding path program 1 times [2024-11-23 22:35:19,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:19,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835491524] [2024-11-23 22:35:19,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:19,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:20,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:20,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835491524] [2024-11-23 22:35:20,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835491524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:20,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:20,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:35:20,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662863570] [2024-11-23 22:35:20,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:20,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:35:20,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:20,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:35:20,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:35:20,012 INFO L87 Difference]: Start difference. First operand 123 states and 180 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:35:20,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:20,038 INFO L93 Difference]: Finished difference Result 244 states and 359 transitions. [2024-11-23 22:35:20,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:35:20,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 103 [2024-11-23 22:35:20,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:20,041 INFO L225 Difference]: With dead ends: 244 [2024-11-23 22:35:20,041 INFO L226 Difference]: Without dead ends: 124 [2024-11-23 22:35:20,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:35:20,042 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:20,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 285 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:35:20,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-23 22:35:20,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-23 22:35:20,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 110 states have (on average 1.4272727272727272) internal successors, (157), 110 states have internal predecessors, (157), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-23 22:35:20,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 181 transitions. [2024-11-23 22:35:20,060 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 181 transitions. Word has length 103 [2024-11-23 22:35:20,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:20,061 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 181 transitions. [2024-11-23 22:35:20,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:35:20,061 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 181 transitions. [2024-11-23 22:35:20,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-23 22:35:20,062 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:20,062 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:20,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 22:35:20,063 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:20,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:20,063 INFO L85 PathProgramCache]: Analyzing trace with hash 271401402, now seen corresponding path program 1 times [2024-11-23 22:35:20,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:20,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812227767] [2024-11-23 22:35:20,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:20,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:22,203 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:22,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:22,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812227767] [2024-11-23 22:35:22,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812227767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:22,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:22,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:35:22,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138496064] [2024-11-23 22:35:22,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:22,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:35:22,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:22,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:35:22,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:35:22,205 INFO L87 Difference]: Start difference. First operand 124 states and 181 transitions. Second operand has 10 states, 8 states have (on average 5.75) internal successors, (46), 10 states have internal predecessors, (46), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:35:23,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:23,254 INFO L93 Difference]: Finished difference Result 332 states and 482 transitions. [2024-11-23 22:35:23,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:35:23,255 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.75) internal successors, (46), 10 states have internal predecessors, (46), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2024-11-23 22:35:23,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:23,257 INFO L225 Difference]: With dead ends: 332 [2024-11-23 22:35:23,257 INFO L226 Difference]: Without dead ends: 211 [2024-11-23 22:35:23,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:35:23,260 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 179 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:23,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 1061 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 22:35:23,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-23 22:35:23,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2024-11-23 22:35:23,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 185 states have (on average 1.4108108108108108) internal successors, (261), 186 states have internal predecessors, (261), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-23 22:35:23,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 301 transitions. [2024-11-23 22:35:23,290 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 301 transitions. Word has length 103 [2024-11-23 22:35:23,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:23,291 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 301 transitions. [2024-11-23 22:35:23,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.75) internal successors, (46), 10 states have internal predecessors, (46), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:35:23,292 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 301 transitions. [2024-11-23 22:35:23,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-23 22:35:23,293 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:23,293 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:23,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 22:35:23,293 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:23,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:23,294 INFO L85 PathProgramCache]: Analyzing trace with hash -291466267, now seen corresponding path program 1 times [2024-11-23 22:35:23,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:23,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216199664] [2024-11-23 22:35:23,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:23,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 22:35:23,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [920469112] [2024-11-23 22:35:23,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:23,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:35:23,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:35:23,413 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:35:23,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 22:35:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:23,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 22:35:23,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:35:23,854 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:23,854 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:35:23,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:23,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216199664] [2024-11-23 22:35:23,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-23 22:35:23,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920469112] [2024-11-23 22:35:23,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920469112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:23,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:23,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:35:23,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246153401] [2024-11-23 22:35:23,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:23,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:35:23,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:23,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:35:23,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:35:23,860 INFO L87 Difference]: Start difference. First operand 208 states and 301 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:35:24,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:24,154 INFO L93 Difference]: Finished difference Result 558 states and 811 transitions. [2024-11-23 22:35:24,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:35:24,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 105 [2024-11-23 22:35:24,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:24,158 INFO L225 Difference]: With dead ends: 558 [2024-11-23 22:35:24,159 INFO L226 Difference]: Without dead ends: 353 [2024-11-23 22:35:24,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:35:24,160 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 134 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:24,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 366 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:35:24,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-11-23 22:35:24,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 282. [2024-11-23 22:35:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 246 states have (on average 1.3983739837398375) internal successors, (344), 247 states have internal predecessors, (344), 32 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-23 22:35:24,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 408 transitions. [2024-11-23 22:35:24,187 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 408 transitions. Word has length 105 [2024-11-23 22:35:24,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:24,188 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 408 transitions. [2024-11-23 22:35:24,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:35:24,188 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 408 transitions. [2024-11-23 22:35:24,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-23 22:35:24,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:24,189 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:24,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 22:35:24,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:35:24,390 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:24,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:24,391 INFO L85 PathProgramCache]: Analyzing trace with hash 170711681, now seen corresponding path program 1 times [2024-11-23 22:35:24,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:24,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837081786] [2024-11-23 22:35:24,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:24,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:25,376 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:25,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:25,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837081786] [2024-11-23 22:35:25,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837081786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:25,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:25,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:35:25,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309009715] [2024-11-23 22:35:25,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:25,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:35:25,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:25,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:35:25,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:35:25,378 INFO L87 Difference]: Start difference. First operand 282 states and 408 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:35:25,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:25,820 INFO L93 Difference]: Finished difference Result 624 states and 894 transitions. [2024-11-23 22:35:25,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:35:25,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2024-11-23 22:35:25,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:25,824 INFO L225 Difference]: With dead ends: 624 [2024-11-23 22:35:25,824 INFO L226 Difference]: Without dead ends: 419 [2024-11-23 22:35:25,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:35:25,828 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 81 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:25,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 644 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 22:35:25,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2024-11-23 22:35:25,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 415. [2024-11-23 22:35:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 369 states have (on average 1.3848238482384825) internal successors, (511), 372 states have internal predecessors, (511), 40 states have call successors, (40), 5 states have call predecessors, (40), 5 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-23 22:35:25,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 591 transitions. [2024-11-23 22:35:25,864 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 591 transitions. Word has length 106 [2024-11-23 22:35:25,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:25,865 INFO L471 AbstractCegarLoop]: Abstraction has 415 states and 591 transitions. [2024-11-23 22:35:25,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:35:25,865 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 591 transitions. [2024-11-23 22:35:25,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-23 22:35:25,867 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:25,867 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:25,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 22:35:25,867 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:25,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:25,868 INFO L85 PathProgramCache]: Analyzing trace with hash 871776259, now seen corresponding path program 1 times [2024-11-23 22:35:25,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:25,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257329567] [2024-11-23 22:35:25,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:25,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:27,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:27,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257329567] [2024-11-23 22:35:27,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257329567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:27,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:27,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:35:27,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577254057] [2024-11-23 22:35:27,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:27,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:35:27,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:27,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:35:27,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:35:27,048 INFO L87 Difference]: Start difference. First operand 415 states and 591 transitions. Second operand has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:35:27,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:27,999 INFO L93 Difference]: Finished difference Result 1088 states and 1550 transitions. [2024-11-23 22:35:28,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:35:28,000 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2024-11-23 22:35:28,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:28,005 INFO L225 Difference]: With dead ends: 1088 [2024-11-23 22:35:28,005 INFO L226 Difference]: Without dead ends: 754 [2024-11-23 22:35:28,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:35:28,009 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 120 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:28,009 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 1062 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 22:35:28,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-11-23 22:35:28,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 741. [2024-11-23 22:35:28,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 665 states have (on average 1.38796992481203) internal successors, (923), 672 states have internal predecessors, (923), 66 states have call successors, (66), 9 states have call predecessors, (66), 9 states have return successors, (66), 59 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-23 22:35:28,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1055 transitions. [2024-11-23 22:35:28,082 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1055 transitions. Word has length 106 [2024-11-23 22:35:28,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:28,083 INFO L471 AbstractCegarLoop]: Abstraction has 741 states and 1055 transitions. [2024-11-23 22:35:28,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:35:28,083 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1055 transitions. [2024-11-23 22:35:28,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 22:35:28,086 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:28,086 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:28,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 22:35:28,087 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:28,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:28,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1777581763, now seen corresponding path program 1 times [2024-11-23 22:35:28,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:28,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250344222] [2024-11-23 22:35:28,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:28,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:29,247 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:29,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:29,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250344222] [2024-11-23 22:35:29,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250344222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:29,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:29,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 22:35:29,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275707861] [2024-11-23 22:35:29,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:29,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:35:29,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:29,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:35:29,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:35:29,250 INFO L87 Difference]: Start difference. First operand 741 states and 1055 transitions. Second operand has 8 states, 6 states have (on average 8.5) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:35:29,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:29,847 INFO L93 Difference]: Finished difference Result 1409 states and 1994 transitions. [2024-11-23 22:35:29,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:35:29,848 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.5) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2024-11-23 22:35:29,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:29,852 INFO L225 Difference]: With dead ends: 1409 [2024-11-23 22:35:29,853 INFO L226 Difference]: Without dead ends: 779 [2024-11-23 22:35:29,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:35:29,855 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 83 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:29,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 876 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 22:35:29,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2024-11-23 22:35:29,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 773. [2024-11-23 22:35:29,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 685 states have (on average 1.3708029197080291) internal successors, (939), 692 states have internal predecessors, (939), 74 states have call successors, (74), 13 states have call predecessors, (74), 13 states have return successors, (74), 67 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-23 22:35:29,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1087 transitions. [2024-11-23 22:35:29,919 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1087 transitions. Word has length 108 [2024-11-23 22:35:29,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:29,921 INFO L471 AbstractCegarLoop]: Abstraction has 773 states and 1087 transitions. [2024-11-23 22:35:29,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.5) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:35:29,921 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1087 transitions. [2024-11-23 22:35:29,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 22:35:29,923 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:29,923 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:29,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 22:35:29,923 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:29,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:29,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1076517185, now seen corresponding path program 1 times [2024-11-23 22:35:29,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:29,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691450173] [2024-11-23 22:35:29,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:29,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:31,510 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:31,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:31,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691450173] [2024-11-23 22:35:31,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691450173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:31,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:31,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 22:35:31,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781123011] [2024-11-23 22:35:31,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:31,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:35:31,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:31,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:35:31,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:35:31,512 INFO L87 Difference]: Start difference. First operand 773 states and 1087 transitions. Second operand has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:35:32,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:32,598 INFO L93 Difference]: Finished difference Result 1745 states and 2453 transitions. [2024-11-23 22:35:32,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:35:32,602 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2024-11-23 22:35:32,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:32,612 INFO L225 Difference]: With dead ends: 1745 [2024-11-23 22:35:32,614 INFO L226 Difference]: Without dead ends: 1083 [2024-11-23 22:35:32,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:35:32,617 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 102 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:32,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 850 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 22:35:32,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2024-11-23 22:35:32,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 968. [2024-11-23 22:35:32,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 869 states have (on average 1.379746835443038) internal successors, (1199), 878 states have internal predecessors, (1199), 82 states have call successors, (82), 16 states have call predecessors, (82), 16 states have return successors, (82), 73 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-23 22:35:32,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1363 transitions. [2024-11-23 22:35:32,749 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1363 transitions. Word has length 108 [2024-11-23 22:35:32,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:32,749 INFO L471 AbstractCegarLoop]: Abstraction has 968 states and 1363 transitions. [2024-11-23 22:35:32,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:35:32,750 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1363 transitions. [2024-11-23 22:35:32,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 22:35:32,751 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:32,752 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:32,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 22:35:32,752 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:32,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:32,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1718988669, now seen corresponding path program 1 times [2024-11-23 22:35:32,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:32,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178892974] [2024-11-23 22:35:32,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:32,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:35,288 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:35,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:35,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178892974] [2024-11-23 22:35:35,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178892974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:35,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:35,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 22:35:35,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614124654] [2024-11-23 22:35:35,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:35,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 22:35:35,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:35,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 22:35:35,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:35:35,290 INFO L87 Difference]: Start difference. First operand 968 states and 1363 transitions. Second operand has 15 states, 10 states have (on average 5.1) internal successors, (51), 15 states have internal predecessors, (51), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-23 22:35:37,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:37,581 INFO L93 Difference]: Finished difference Result 2104 states and 2961 transitions. [2024-11-23 22:35:37,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 22:35:37,581 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 10 states have (on average 5.1) internal successors, (51), 15 states have internal predecessors, (51), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 6 states have call successors, (12) Word has length 108 [2024-11-23 22:35:37,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:37,588 INFO L225 Difference]: With dead ends: 2104 [2024-11-23 22:35:37,588 INFO L226 Difference]: Without dead ends: 1282 [2024-11-23 22:35:37,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-11-23 22:35:37,590 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 253 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 1356 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 2279 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:37,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 2279 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1356 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-23 22:35:37,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2024-11-23 22:35:37,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1157. [2024-11-23 22:35:37,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1048 states have (on average 1.3874045801526718) internal successors, (1454), 1059 states have internal predecessors, (1454), 90 states have call successors, (90), 18 states have call predecessors, (90), 18 states have return successors, (90), 79 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-23 22:35:37,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1634 transitions. [2024-11-23 22:35:37,678 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1634 transitions. Word has length 108 [2024-11-23 22:35:37,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:37,678 INFO L471 AbstractCegarLoop]: Abstraction has 1157 states and 1634 transitions. [2024-11-23 22:35:37,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 10 states have (on average 5.1) internal successors, (51), 15 states have internal predecessors, (51), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-23 22:35:37,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1634 transitions. [2024-11-23 22:35:37,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 22:35:37,681 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:37,681 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:37,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 22:35:37,681 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:37,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:37,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2141690495, now seen corresponding path program 1 times [2024-11-23 22:35:37,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:37,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333797271] [2024-11-23 22:35:37,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:37,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:38,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:38,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333797271] [2024-11-23 22:35:38,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333797271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:38,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:38,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 22:35:38,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990144711] [2024-11-23 22:35:38,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:38,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:35:38,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:38,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:35:38,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:35:38,715 INFO L87 Difference]: Start difference. First operand 1157 states and 1634 transitions. Second operand has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:35:39,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:39,796 INFO L93 Difference]: Finished difference Result 2450 states and 3460 transitions. [2024-11-23 22:35:39,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:35:39,797 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2024-11-23 22:35:39,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:39,806 INFO L225 Difference]: With dead ends: 2450 [2024-11-23 22:35:39,806 INFO L226 Difference]: Without dead ends: 1471 [2024-11-23 22:35:39,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:35:39,809 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 101 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:39,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 1332 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 22:35:39,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2024-11-23 22:35:39,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1159. [2024-11-23 22:35:39,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1050 states have (on average 1.3866666666666667) internal successors, (1456), 1061 states have internal predecessors, (1456), 90 states have call successors, (90), 18 states have call predecessors, (90), 18 states have return successors, (90), 79 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-23 22:35:39,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1636 transitions. [2024-11-23 22:35:39,904 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1636 transitions. Word has length 108 [2024-11-23 22:35:39,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:39,904 INFO L471 AbstractCegarLoop]: Abstraction has 1159 states and 1636 transitions. [2024-11-23 22:35:39,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:35:39,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1636 transitions. [2024-11-23 22:35:39,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 22:35:39,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:39,907 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:39,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 22:35:39,907 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:39,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:39,908 INFO L85 PathProgramCache]: Analyzing trace with hash 728921149, now seen corresponding path program 1 times [2024-11-23 22:35:39,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:39,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422446862] [2024-11-23 22:35:39,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:39,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:41,325 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:41,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:41,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422446862] [2024-11-23 22:35:41,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422446862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:41,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:41,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:35:41,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107450479] [2024-11-23 22:35:41,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:41,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:35:41,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:41,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:35:41,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:35:41,328 INFO L87 Difference]: Start difference. First operand 1159 states and 1636 transitions. Second operand has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 11 states have internal predecessors, (51), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:35:42,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:42,972 INFO L93 Difference]: Finished difference Result 2255 states and 3172 transitions. [2024-11-23 22:35:42,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:35:42,974 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 11 states have internal predecessors, (51), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2024-11-23 22:35:42,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:42,979 INFO L225 Difference]: With dead ends: 2255 [2024-11-23 22:35:42,980 INFO L226 Difference]: Without dead ends: 1274 [2024-11-23 22:35:42,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:35:42,984 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 178 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:42,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 1626 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 22:35:42,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2024-11-23 22:35:43,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1024. [2024-11-23 22:35:43,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 923 states have (on average 1.3878656554712894) internal successors, (1281), 932 states have internal predecessors, (1281), 82 states have call successors, (82), 18 states have call predecessors, (82), 18 states have return successors, (82), 73 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-23 22:35:43,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1445 transitions. [2024-11-23 22:35:43,066 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1445 transitions. Word has length 108 [2024-11-23 22:35:43,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:43,067 INFO L471 AbstractCegarLoop]: Abstraction has 1024 states and 1445 transitions. [2024-11-23 22:35:43,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 11 states have internal predecessors, (51), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:35:43,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1445 transitions. [2024-11-23 22:35:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 22:35:43,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:43,069 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:43,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 22:35:43,069 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:43,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:43,070 INFO L85 PathProgramCache]: Analyzing trace with hash -770540293, now seen corresponding path program 1 times [2024-11-23 22:35:43,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:43,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453973158] [2024-11-23 22:35:43,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:43,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:44,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:44,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453973158] [2024-11-23 22:35:44,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453973158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:44,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:44,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 22:35:44,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378706159] [2024-11-23 22:35:44,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:44,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:35:44,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:44,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:35:44,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:35:44,286 INFO L87 Difference]: Start difference. First operand 1024 states and 1445 transitions. Second operand has 9 states, 6 states have (on average 8.5) internal successors, (51), 9 states have internal predecessors, (51), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-23 22:35:45,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:45,208 INFO L93 Difference]: Finished difference Result 2132 states and 2991 transitions. [2024-11-23 22:35:45,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:35:45,209 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 8.5) internal successors, (51), 9 states have internal predecessors, (51), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 4 states have call successors, (12) Word has length 108 [2024-11-23 22:35:45,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:45,215 INFO L225 Difference]: With dead ends: 2132 [2024-11-23 22:35:45,216 INFO L226 Difference]: Without dead ends: 1274 [2024-11-23 22:35:45,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:35:45,218 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 108 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:45,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1038 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 22:35:45,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2024-11-23 22:35:45,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1143. [2024-11-23 22:35:45,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1027 states have (on average 1.3777994157740994) internal successors, (1415), 1038 states have internal predecessors, (1415), 94 states have call successors, (94), 21 states have call predecessors, (94), 21 states have return successors, (94), 83 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-23 22:35:45,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1603 transitions. [2024-11-23 22:35:45,337 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1603 transitions. Word has length 108 [2024-11-23 22:35:45,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:45,338 INFO L471 AbstractCegarLoop]: Abstraction has 1143 states and 1603 transitions. [2024-11-23 22:35:45,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 8.5) internal successors, (51), 9 states have internal predecessors, (51), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-23 22:35:45,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1603 transitions. [2024-11-23 22:35:45,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 22:35:45,340 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:45,341 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:45,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 22:35:45,341 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:45,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:45,341 INFO L85 PathProgramCache]: Analyzing trace with hash -899801948, now seen corresponding path program 1 times [2024-11-23 22:35:45,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:45,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340460923] [2024-11-23 22:35:45,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:45,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:46,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:46,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340460923] [2024-11-23 22:35:46,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340460923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:46,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:46,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 22:35:46,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660787139] [2024-11-23 22:35:46,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:46,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:35:46,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:46,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:35:46,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:35:46,640 INFO L87 Difference]: Start difference. First operand 1143 states and 1603 transitions. Second operand has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:35:47,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:47,734 INFO L93 Difference]: Finished difference Result 2446 states and 3415 transitions. [2024-11-23 22:35:47,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:35:47,735 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 3 states have call successors, (12) Word has length 109 [2024-11-23 22:35:47,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:47,742 INFO L225 Difference]: With dead ends: 2446 [2024-11-23 22:35:47,743 INFO L226 Difference]: Without dead ends: 1477 [2024-11-23 22:35:47,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:35:47,746 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 199 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:47,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1018 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 22:35:47,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2024-11-23 22:35:47,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1049. [2024-11-23 22:35:47,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 944 states have (on average 1.3760593220338984) internal successors, (1299), 953 states have internal predecessors, (1299), 84 states have call successors, (84), 20 states have call predecessors, (84), 20 states have return successors, (84), 75 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-23 22:35:47,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1467 transitions. [2024-11-23 22:35:47,839 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1467 transitions. Word has length 109 [2024-11-23 22:35:47,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:47,840 INFO L471 AbstractCegarLoop]: Abstraction has 1049 states and 1467 transitions. [2024-11-23 22:35:47,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:35:47,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1467 transitions. [2024-11-23 22:35:47,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 22:35:47,842 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:47,842 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:47,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 22:35:47,843 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:47,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:47,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1352594456, now seen corresponding path program 1 times [2024-11-23 22:35:47,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:47,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20761409] [2024-11-23 22:35:47,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:47,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:48,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:48,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20761409] [2024-11-23 22:35:48,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20761409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:48,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:48,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 22:35:48,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476359837] [2024-11-23 22:35:48,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:48,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:35:48,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:48,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:35:48,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:35:48,651 INFO L87 Difference]: Start difference. First operand 1049 states and 1467 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:35:49,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:49,557 INFO L93 Difference]: Finished difference Result 2199 states and 3061 transitions. [2024-11-23 22:35:49,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:35:49,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2024-11-23 22:35:49,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:49,564 INFO L225 Difference]: With dead ends: 2199 [2024-11-23 22:35:49,564 INFO L226 Difference]: Without dead ends: 1332 [2024-11-23 22:35:49,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:35:49,566 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 207 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:49,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 944 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 22:35:49,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2024-11-23 22:35:49,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1042. [2024-11-23 22:35:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 937 states have (on average 1.3788687299893276) internal successors, (1292), 946 states have internal predecessors, (1292), 84 states have call successors, (84), 20 states have call predecessors, (84), 20 states have return successors, (84), 75 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-23 22:35:49,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1460 transitions. [2024-11-23 22:35:49,655 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1460 transitions. Word has length 109 [2024-11-23 22:35:49,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:49,657 INFO L471 AbstractCegarLoop]: Abstraction has 1042 states and 1460 transitions. [2024-11-23 22:35:49,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:35:49,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1460 transitions. [2024-11-23 22:35:49,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 22:35:49,660 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:49,660 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:49,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 22:35:49,660 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:49,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:49,661 INFO L85 PathProgramCache]: Analyzing trace with hash -651529878, now seen corresponding path program 1 times [2024-11-23 22:35:49,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:49,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138986251] [2024-11-23 22:35:49,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:49,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:50,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:50,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138986251] [2024-11-23 22:35:50,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138986251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:50,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:50,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:35:50,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133451336] [2024-11-23 22:35:50,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:50,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:35:50,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:50,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:35:50,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:35:50,775 INFO L87 Difference]: Start difference. First operand 1042 states and 1460 transitions. Second operand has 10 states, 7 states have (on average 7.428571428571429) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-23 22:35:52,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:52,083 INFO L93 Difference]: Finished difference Result 2097 states and 2926 transitions. [2024-11-23 22:35:52,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:35:52,084 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 7.428571428571429) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 4 states have call successors, (12) Word has length 109 [2024-11-23 22:35:52,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:52,089 INFO L225 Difference]: With dead ends: 2097 [2024-11-23 22:35:52,090 INFO L226 Difference]: Without dead ends: 1229 [2024-11-23 22:35:52,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:35:52,092 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 249 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:52,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 1401 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 22:35:52,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2024-11-23 22:35:52,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1029. [2024-11-23 22:35:52,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 924 states have (on average 1.3755411255411256) internal successors, (1271), 933 states have internal predecessors, (1271), 84 states have call successors, (84), 20 states have call predecessors, (84), 20 states have return successors, (84), 75 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-23 22:35:52,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1439 transitions. [2024-11-23 22:35:52,186 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1439 transitions. Word has length 109 [2024-11-23 22:35:52,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:52,187 INFO L471 AbstractCegarLoop]: Abstraction has 1029 states and 1439 transitions. [2024-11-23 22:35:52,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 7.428571428571429) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-23 22:35:52,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1439 transitions. [2024-11-23 22:35:52,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-23 22:35:52,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:52,189 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:52,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 22:35:52,190 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:52,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:52,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1345789881, now seen corresponding path program 1 times [2024-11-23 22:35:52,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:52,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768625668] [2024-11-23 22:35:52,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:52,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:52,949 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:52,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:52,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768625668] [2024-11-23 22:35:52,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768625668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:52,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:52,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 22:35:52,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307551449] [2024-11-23 22:35:52,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:52,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:35:52,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:52,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:35:52,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:35:52,950 INFO L87 Difference]: Start difference. First operand 1029 states and 1439 transitions. Second operand has 8 states, 5 states have (on average 10.6) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-23 22:35:53,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:53,634 INFO L93 Difference]: Finished difference Result 2198 states and 3070 transitions. [2024-11-23 22:35:53,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:35:53,635 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 10.6) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 4 states have call successors, (12) Word has length 110 [2024-11-23 22:35:53,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:53,640 INFO L225 Difference]: With dead ends: 2198 [2024-11-23 22:35:53,640 INFO L226 Difference]: Without dead ends: 1312 [2024-11-23 22:35:53,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:35:53,642 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 108 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:53,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 834 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 22:35:53,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2024-11-23 22:35:53,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1029. [2024-11-23 22:35:53,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 924 states have (on average 1.3733766233766234) internal successors, (1269), 933 states have internal predecessors, (1269), 84 states have call successors, (84), 20 states have call predecessors, (84), 20 states have return successors, (84), 75 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-23 22:35:53,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1437 transitions. [2024-11-23 22:35:53,745 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1437 transitions. Word has length 110 [2024-11-23 22:35:53,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:53,746 INFO L471 AbstractCegarLoop]: Abstraction has 1029 states and 1437 transitions. [2024-11-23 22:35:53,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 10.6) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-23 22:35:53,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1437 transitions. [2024-11-23 22:35:53,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-23 22:35:53,749 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:53,749 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:53,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 22:35:53,749 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:53,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:53,750 INFO L85 PathProgramCache]: Analyzing trace with hash -459648453, now seen corresponding path program 1 times [2024-11-23 22:35:53,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:53,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252310866] [2024-11-23 22:35:53,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:53,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:35:54,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:54,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252310866] [2024-11-23 22:35:54,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252310866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:54,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:54,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-23 22:35:54,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524312209] [2024-11-23 22:35:54,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:54,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 22:35:54,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:54,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 22:35:54,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2024-11-23 22:35:54,938 INFO L87 Difference]: Start difference. First operand 1029 states and 1437 transitions. Second operand has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:35:56,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:56,278 INFO L93 Difference]: Finished difference Result 2197 states and 3065 transitions. [2024-11-23 22:35:56,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 22:35:56,279 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2024-11-23 22:35:56,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:56,285 INFO L225 Difference]: With dead ends: 2197 [2024-11-23 22:35:56,286 INFO L226 Difference]: Without dead ends: 1342 [2024-11-23 22:35:56,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-11-23 22:35:56,290 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 109 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:56,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 2532 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 22:35:56,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2024-11-23 22:35:56,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1151. [2024-11-23 22:35:56,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1041 states have (on average 1.3756003842459175) internal successors, (1432), 1051 states have internal predecessors, (1432), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (88), 78 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-23 22:35:56,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1608 transitions. [2024-11-23 22:35:56,387 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1608 transitions. Word has length 110 [2024-11-23 22:35:56,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:56,387 INFO L471 AbstractCegarLoop]: Abstraction has 1151 states and 1608 transitions. [2024-11-23 22:35:56,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:35:56,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1608 transitions. [2024-11-23 22:35:56,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 22:35:56,390 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:56,390 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:56,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 22:35:56,390 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:56,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:56,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1609879279, now seen corresponding path program 1 times [2024-11-23 22:35:56,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:56,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403216564] [2024-11-23 22:35:56,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:56,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 22:35:56,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571784177] [2024-11-23 22:35:56,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:56,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:35:56,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:35:56,500 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:35:56,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 22:35:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 22:35:56,823 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 22:35:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 22:35:57,194 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 22:35:57,194 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-23 22:35:57,195 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-23 22:35:57,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 22:35:57,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-23 22:35:57,401 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:57,506 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-23 22:35:57,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:35:57 BoogieIcfgContainer [2024-11-23 22:35:57,511 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-23 22:35:57,511 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 22:35:57,511 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 22:35:57,511 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 22:35:57,514 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:35:16" (3/4) ... [2024-11-23 22:35:57,517 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-23 22:35:57,517 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 22:35:57,518 INFO L158 Benchmark]: Toolchain (without parser) took 42731.98ms. Allocated memory was 117.4MB in the beginning and 755.0MB in the end (delta: 637.5MB). Free memory was 91.9MB in the beginning and 361.2MB in the end (delta: -269.3MB). Peak memory consumption was 368.3MB. Max. memory is 16.1GB. [2024-11-23 22:35:57,519 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 167.8MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:35:57,519 INFO L158 Benchmark]: CACSL2BoogieTranslator took 501.09ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 75.8MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-23 22:35:57,520 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.93ms. Allocated memory is still 117.4MB. Free memory was 75.8MB in the beginning and 71.5MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:35:57,520 INFO L158 Benchmark]: Boogie Preprocessor took 111.19ms. Allocated memory is still 117.4MB. Free memory was 71.5MB in the beginning and 66.7MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 22:35:57,521 INFO L158 Benchmark]: RCFGBuilder took 1102.51ms. Allocated memory is still 117.4MB. Free memory was 66.7MB in the beginning and 84.0MB in the end (delta: -17.3MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. [2024-11-23 22:35:57,521 INFO L158 Benchmark]: TraceAbstraction took 40879.53ms. Allocated memory was 117.4MB in the beginning and 755.0MB in the end (delta: 637.5MB). Free memory was 83.4MB in the beginning and 361.3MB in the end (delta: -277.9MB). Peak memory consumption was 362.0MB. Max. memory is 16.1GB. [2024-11-23 22:35:57,521 INFO L158 Benchmark]: Witness Printer took 6.45ms. Allocated memory is still 755.0MB. Free memory was 361.3MB in the beginning and 361.2MB in the end (delta: 85.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:35:57,523 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 167.8MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 501.09ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 75.8MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 120.93ms. Allocated memory is still 117.4MB. Free memory was 75.8MB in the beginning and 71.5MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 111.19ms. Allocated memory is still 117.4MB. Free memory was 71.5MB in the beginning and 66.7MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1102.51ms. Allocated memory is still 117.4MB. Free memory was 66.7MB in the beginning and 84.0MB in the end (delta: -17.3MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. * TraceAbstraction took 40879.53ms. Allocated memory was 117.4MB in the beginning and 755.0MB in the end (delta: 637.5MB). Free memory was 83.4MB in the beginning and 361.3MB in the end (delta: -277.9MB). Peak memory consumption was 362.0MB. Max. memory is 16.1GB. * Witness Printer took 6.45ms. Allocated memory is still 755.0MB. Free memory was 361.3MB in the beginning and 361.2MB in the end (delta: 85.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someBinaryFLOATComparisonOperation at line 67, overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someBinaryFLOATComparisonOperation at line 88, overapproximation of someBinaryFLOATComparisonOperation at line 67, overapproximation of someUnaryDOUBLEoperation at line 26. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22-L24] unsigned char BOOL_unsigned_char_Array_0[1] = { 1 }; [L22-L24] unsigned char BOOL_unsigned_char_Array_0[1] = { 1 }; [L25-L27] float float_Array_0[3] = { 9.125, 50.5, -0.6 }; [L25-L27] float float_Array_0[3] = { 9.125, 50.5, -0.6 }; [L25-L27] float float_Array_0[3] = { 9.125, 50.5, -0.6 }; [L25-L27] float float_Array_0[3] = { 9.125, 50.5, -0.6 }; [L28-L30] unsigned short int unsigned_short_int_Array_0[2][3] = { {8, 32, 200}, {1, 56955, 10} }; [L28-L30] unsigned short int unsigned_short_int_Array_0[2][3] = { {8, 32, 200}, {1, 56955, 10} }; [L28-L30] unsigned short int unsigned_short_int_Array_0[2][3] = { {8, 32, 200}, {1, 56955, 10} }; [L28-L30] unsigned short int unsigned_short_int_Array_0[2][3] = { {8, 32, 200}, {1, 56955, 10} }; [L28-L30] unsigned short int unsigned_short_int_Array_0[2][3] = { {8, 32, 200}, {1, 56955, 10} }; [L28-L30] unsigned short int unsigned_short_int_Array_0[2][3] = { {8, 32, 200}, {1, 56955, 10} }; [L28-L30] unsigned short int unsigned_short_int_Array_0[2][3] = { {8, 32, 200}, {1, 56955, 10} }; [L31] unsigned short int last_1_unsigned_short_int_Array_0_0__0_ = 8; [L32] unsigned short int last_1_unsigned_short_int_Array_0_1__2_ = 10; VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=0, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L92] isInitial = 1 [L93] FCALL initially() [L95] CALL updateLastVariables() [L84] EXPR unsigned_short_int_Array_0[0][0] [L84] last_1_unsigned_short_int_Array_0_0__0_ = unsigned_short_int_Array_0[0][0] [L85] EXPR unsigned_short_int_Array_0[1][2] [L85] last_1_unsigned_short_int_Array_0_1__2_ = unsigned_short_int_Array_0[1][2] [L95] RET updateLastVariables() [L96] CALL updateVariables() [L63] BOOL_unsigned_char_Array_0[0] = __VERIFIER_nondet_uchar() [L64] EXPR BOOL_unsigned_char_Array_0[0] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L64] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[0] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L20] COND FALSE !(!cond) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L64] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[0] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L65] EXPR BOOL_unsigned_char_Array_0[0] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L65] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[0] <= 1) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L20] COND FALSE !(!cond) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L65] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[0] <= 1) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L66] float_Array_0[0] = __VERIFIER_nondet_float() [L67] EXPR float_Array_0[0] [L67] EXPR float_Array_0[0] >= -922337.2036854765600e+13F && float_Array_0[0] <= -1.0e-20F VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L67] EXPR float_Array_0[0] >= -922337.2036854765600e+13F && float_Array_0[0] <= -1.0e-20F [L67] EXPR float_Array_0[0] [L67] EXPR float_Array_0[0] >= -922337.2036854765600e+13F && float_Array_0[0] <= -1.0e-20F VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L67] EXPR (float_Array_0[0] >= -922337.2036854765600e+13F && float_Array_0[0] <= -1.0e-20F) || (float_Array_0[0] <= 9223372.036854765600e+12F && float_Array_0[0] >= 1.0e-20F ) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L67] EXPR (float_Array_0[0] >= -922337.2036854765600e+13F && float_Array_0[0] <= -1.0e-20F) || (float_Array_0[0] <= 9223372.036854765600e+12F && float_Array_0[0] >= 1.0e-20F ) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L67] CALL assume_abort_if_not((float_Array_0[0] >= -922337.2036854765600e+13F && float_Array_0[0] <= -1.0e-20F) || (float_Array_0[0] <= 9223372.036854765600e+12F && float_Array_0[0] >= 1.0e-20F )) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L20] COND FALSE !(!cond) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L67] RET assume_abort_if_not((float_Array_0[0] >= -922337.2036854765600e+13F && float_Array_0[0] <= -1.0e-20F) || (float_Array_0[0] <= 9223372.036854765600e+12F && float_Array_0[0] >= 1.0e-20F )) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L68] float_Array_0[1] = __VERIFIER_nondet_float() [L69] EXPR float_Array_0[1] [L69] EXPR float_Array_0[1] >= -922337.2036854765600e+13F && float_Array_0[1] <= -1.0e-20F VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L69] EXPR float_Array_0[1] >= -922337.2036854765600e+13F && float_Array_0[1] <= -1.0e-20F [L69] EXPR float_Array_0[1] [L69] EXPR float_Array_0[1] >= -922337.2036854765600e+13F && float_Array_0[1] <= -1.0e-20F VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L69] EXPR (float_Array_0[1] >= -922337.2036854765600e+13F && float_Array_0[1] <= -1.0e-20F) || (float_Array_0[1] <= 9223372.036854765600e+12F && float_Array_0[1] >= 1.0e-20F ) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L69] EXPR (float_Array_0[1] >= -922337.2036854765600e+13F && float_Array_0[1] <= -1.0e-20F) || (float_Array_0[1] <= 9223372.036854765600e+12F && float_Array_0[1] >= 1.0e-20F ) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L69] CALL assume_abort_if_not((float_Array_0[1] >= -922337.2036854765600e+13F && float_Array_0[1] <= -1.0e-20F) || (float_Array_0[1] <= 9223372.036854765600e+12F && float_Array_0[1] >= 1.0e-20F )) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L20] COND FALSE !(!cond) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L69] RET assume_abort_if_not((float_Array_0[1] >= -922337.2036854765600e+13F && float_Array_0[1] <= -1.0e-20F) || (float_Array_0[1] <= 9223372.036854765600e+12F && float_Array_0[1] >= 1.0e-20F )) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L70] unsigned_short_int_Array_0[1][0] = __VERIFIER_nondet_ushort() [L71] EXPR unsigned_short_int_Array_0[1][0] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L71] CALL assume_abort_if_not(unsigned_short_int_Array_0[1][0] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L20] COND FALSE !(!cond) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L71] RET assume_abort_if_not(unsigned_short_int_Array_0[1][0] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L72] EXPR unsigned_short_int_Array_0[1][0] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L72] CALL assume_abort_if_not(unsigned_short_int_Array_0[1][0] <= 65534) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L20] COND FALSE !(!cond) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L72] RET assume_abort_if_not(unsigned_short_int_Array_0[1][0] <= 65534) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L73] unsigned_short_int_Array_0[0][1] = __VERIFIER_nondet_ushort() [L74] EXPR unsigned_short_int_Array_0[0][1] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L74] CALL assume_abort_if_not(unsigned_short_int_Array_0[0][1] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L20] COND FALSE !(!cond) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L74] RET assume_abort_if_not(unsigned_short_int_Array_0[0][1] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L75] EXPR unsigned_short_int_Array_0[0][1] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L75] CALL assume_abort_if_not(unsigned_short_int_Array_0[0][1] <= 32767) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L20] COND FALSE !(!cond) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L75] RET assume_abort_if_not(unsigned_short_int_Array_0[0][1] <= 32767) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L76] unsigned_short_int_Array_0[1][1] = __VERIFIER_nondet_ushort() [L77] EXPR unsigned_short_int_Array_0[1][1] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L77] CALL assume_abort_if_not(unsigned_short_int_Array_0[1][1] >= 32767) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L20] COND FALSE !(!cond) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L77] RET assume_abort_if_not(unsigned_short_int_Array_0[1][1] >= 32767) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L78] EXPR unsigned_short_int_Array_0[1][1] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L78] CALL assume_abort_if_not(unsigned_short_int_Array_0[1][1] <= 65534) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L20] COND FALSE !(!cond) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L78] RET assume_abort_if_not(unsigned_short_int_Array_0[1][1] <= 65534) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L79] unsigned_short_int_Array_0[0][2] = __VERIFIER_nondet_ushort() [L80] EXPR unsigned_short_int_Array_0[0][2] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L80] CALL assume_abort_if_not(unsigned_short_int_Array_0[0][2] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L20] COND FALSE !(!cond) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L80] RET assume_abort_if_not(unsigned_short_int_Array_0[0][2] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L81] EXPR unsigned_short_int_Array_0[0][2] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L81] CALL assume_abort_if_not(unsigned_short_int_Array_0[0][2] <= 65534) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L20] COND FALSE !(!cond) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L81] RET assume_abort_if_not(unsigned_short_int_Array_0[0][2] <= 65534) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L96] RET updateVariables() [L97] CALL step() [L36] COND TRUE last_1_unsigned_short_int_Array_0_0__0_ <= (last_1_unsigned_short_int_Array_0_0__0_ * last_1_unsigned_short_int_Array_0_1__2_) [L37] EXPR unsigned_short_int_Array_0[0][2] [L37] EXPR unsigned_short_int_Array_0[1][1] [L37] EXPR unsigned_short_int_Array_0[0][1] [L37] EXPR unsigned_short_int_Array_0[1][0] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L37] EXPR (((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0]) [L37] EXPR unsigned_short_int_Array_0[1][0] [L37] EXPR (((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0]) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L37] EXPR ((unsigned_short_int_Array_0[0][2]) > ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0]))))) ? (unsigned_short_int_Array_0[0][2]) : ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0])))) [L37] EXPR unsigned_short_int_Array_0[0][2] [L37] EXPR ((unsigned_short_int_Array_0[0][2]) > ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0]))))) ? (unsigned_short_int_Array_0[0][2]) : ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0])))) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L37] unsigned_short_int_Array_0[1][2] = ((((unsigned_short_int_Array_0[0][2]) > ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0]))))) ? (unsigned_short_int_Array_0[0][2]) : ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0])))))) [L39] EXPR BOOL_unsigned_char_Array_0[0] [L39] BOOL_unsigned_char_Array_0[0] || (unsigned_short_int_Array_0[1][1] == unsigned_short_int_Array_0[1][0]) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L39] BOOL_unsigned_char_Array_0[0] || (unsigned_short_int_Array_0[1][1] == unsigned_short_int_Array_0[1][0]) [L39] EXPR unsigned_short_int_Array_0[1][1] [L39] EXPR unsigned_short_int_Array_0[1][0] [L39] BOOL_unsigned_char_Array_0[0] || (unsigned_short_int_Array_0[1][1] == unsigned_short_int_Array_0[1][0]) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L39] COND FALSE !(BOOL_unsigned_char_Array_0[0] || (unsigned_short_int_Array_0[1][1] == unsigned_short_int_Array_0[1][0])) [L50] EXPR unsigned_short_int_Array_0[1][1] [L50] unsigned_short_int_Array_0[0][0] = unsigned_short_int_Array_0[1][1] [L52] EXPR unsigned_short_int_Array_0[0][1] [L52] EXPR unsigned_short_int_Array_0[1][1] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L52] COND FALSE !(unsigned_short_int_Array_0[0][1] != unsigned_short_int_Array_0[1][1]) [L59] EXPR float_Array_0[0] [L59] float_Array_0[2] = float_Array_0[0] [L97] RET step() [L98] CALL, EXPR property() [L88] EXPR (last_1_unsigned_short_int_Array_0_0__0_ <= (last_1_unsigned_short_int_Array_0_0__0_ * last_1_unsigned_short_int_Array_0_1__2_)) ? (unsigned_short_int_Array_0[1][2] == ((unsigned short int) ((((unsigned_short_int_Array_0[0][2]) > ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0]))))) ? (unsigned_short_int_Array_0[0][2]) : ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0])))))))) : 1 [L88] EXPR unsigned_short_int_Array_0[1][2] [L88] EXPR unsigned_short_int_Array_0[0][2] [L88] EXPR unsigned_short_int_Array_0[1][1] [L88] EXPR unsigned_short_int_Array_0[0][1] [L88] EXPR unsigned_short_int_Array_0[1][0] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L88] EXPR (((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0]) [L88] EXPR unsigned_short_int_Array_0[1][0] [L88] EXPR (((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0]) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L88] EXPR ((unsigned_short_int_Array_0[0][2]) > ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0]))))) ? (unsigned_short_int_Array_0[0][2]) : ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0])))) [L88] EXPR unsigned_short_int_Array_0[0][2] [L88] EXPR ((unsigned_short_int_Array_0[0][2]) > ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0]))))) ? (unsigned_short_int_Array_0[0][2]) : ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0])))) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L88] EXPR (last_1_unsigned_short_int_Array_0_0__0_ <= (last_1_unsigned_short_int_Array_0_0__0_ * last_1_unsigned_short_int_Array_0_1__2_)) ? (unsigned_short_int_Array_0[1][2] == ((unsigned short int) ((((unsigned_short_int_Array_0[0][2]) > ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0]))))) ? (unsigned_short_int_Array_0[0][2]) : ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0])))))))) : 1 VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L88] EXPR ((last_1_unsigned_short_int_Array_0_0__0_ <= (last_1_unsigned_short_int_Array_0_0__0_ * last_1_unsigned_short_int_Array_0_1__2_)) ? (unsigned_short_int_Array_0[1][2] == ((unsigned short int) ((((unsigned_short_int_Array_0[0][2]) > ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0]))))) ? (unsigned_short_int_Array_0[0][2]) : ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0])))))))) : 1) && ((BOOL_unsigned_char_Array_0[0] || (unsigned_short_int_Array_0[1][1] == unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] <= (((((0) < (unsigned_short_int_Array_0[1][2])) ? (0) : (unsigned_short_int_Array_0[1][2]))) << unsigned_short_int_Array_0[1][2])) ? ((BOOL_unsigned_char_Array_0[0] && (unsigned_short_int_Array_0[1][2] == (unsigned_short_int_Array_0[1][1] * unsigned_short_int_Array_0[0][2]))) ? (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[0][2])) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[0][2]))) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) 2))) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[1][1]))) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L88] EXPR ((last_1_unsigned_short_int_Array_0_0__0_ <= (last_1_unsigned_short_int_Array_0_0__0_ * last_1_unsigned_short_int_Array_0_1__2_)) ? (unsigned_short_int_Array_0[1][2] == ((unsigned short int) ((((unsigned_short_int_Array_0[0][2]) > ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0]))))) ? (unsigned_short_int_Array_0[0][2]) : ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0])))))))) : 1) && ((BOOL_unsigned_char_Array_0[0] || (unsigned_short_int_Array_0[1][1] == unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] <= (((((0) < (unsigned_short_int_Array_0[1][2])) ? (0) : (unsigned_short_int_Array_0[1][2]))) << unsigned_short_int_Array_0[1][2])) ? ((BOOL_unsigned_char_Array_0[0] && (unsigned_short_int_Array_0[1][2] == (unsigned_short_int_Array_0[1][1] * unsigned_short_int_Array_0[0][2]))) ? (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[0][2])) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[0][2]))) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) 2))) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[1][1]))) [L88] EXPR BOOL_unsigned_char_Array_0[0] [L88] EXPR BOOL_unsigned_char_Array_0[0] || (unsigned_short_int_Array_0[1][1] == unsigned_short_int_Array_0[1][0]) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L88] EXPR BOOL_unsigned_char_Array_0[0] || (unsigned_short_int_Array_0[1][1] == unsigned_short_int_Array_0[1][0]) [L88] EXPR unsigned_short_int_Array_0[1][1] [L88] EXPR unsigned_short_int_Array_0[1][0] [L88] EXPR BOOL_unsigned_char_Array_0[0] || (unsigned_short_int_Array_0[1][1] == unsigned_short_int_Array_0[1][0]) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L88] EXPR (BOOL_unsigned_char_Array_0[0] || (unsigned_short_int_Array_0[1][1] == unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] <= (((((0) < (unsigned_short_int_Array_0[1][2])) ? (0) : (unsigned_short_int_Array_0[1][2]))) << unsigned_short_int_Array_0[1][2])) ? ((BOOL_unsigned_char_Array_0[0] && (unsigned_short_int_Array_0[1][2] == (unsigned_short_int_Array_0[1][1] * unsigned_short_int_Array_0[0][2]))) ? (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[0][2])) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[0][2]))) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) 2))) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[1][1])) [L88] EXPR unsigned_short_int_Array_0[0][0] [L88] EXPR unsigned_short_int_Array_0[1][1] [L88] EXPR (BOOL_unsigned_char_Array_0[0] || (unsigned_short_int_Array_0[1][1] == unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] <= (((((0) < (unsigned_short_int_Array_0[1][2])) ? (0) : (unsigned_short_int_Array_0[1][2]))) << unsigned_short_int_Array_0[1][2])) ? ((BOOL_unsigned_char_Array_0[0] && (unsigned_short_int_Array_0[1][2] == (unsigned_short_int_Array_0[1][1] * unsigned_short_int_Array_0[0][2]))) ? (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[0][2])) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[0][2]))) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) 2))) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[1][1])) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L88] EXPR ((last_1_unsigned_short_int_Array_0_0__0_ <= (last_1_unsigned_short_int_Array_0_0__0_ * last_1_unsigned_short_int_Array_0_1__2_)) ? (unsigned_short_int_Array_0[1][2] == ((unsigned short int) ((((unsigned_short_int_Array_0[0][2]) > ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0]))))) ? (unsigned_short_int_Array_0[0][2]) : ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0])))))))) : 1) && ((BOOL_unsigned_char_Array_0[0] || (unsigned_short_int_Array_0[1][1] == unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] <= (((((0) < (unsigned_short_int_Array_0[1][2])) ? (0) : (unsigned_short_int_Array_0[1][2]))) << unsigned_short_int_Array_0[1][2])) ? ((BOOL_unsigned_char_Array_0[0] && (unsigned_short_int_Array_0[1][2] == (unsigned_short_int_Array_0[1][1] * unsigned_short_int_Array_0[0][2]))) ? (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[0][2])) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[0][2]))) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) 2))) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[1][1]))) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L88] EXPR (((last_1_unsigned_short_int_Array_0_0__0_ <= (last_1_unsigned_short_int_Array_0_0__0_ * last_1_unsigned_short_int_Array_0_1__2_)) ? (unsigned_short_int_Array_0[1][2] == ((unsigned short int) ((((unsigned_short_int_Array_0[0][2]) > ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0]))))) ? (unsigned_short_int_Array_0[0][2]) : ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0])))))))) : 1) && ((BOOL_unsigned_char_Array_0[0] || (unsigned_short_int_Array_0[1][1] == unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] <= (((((0) < (unsigned_short_int_Array_0[1][2])) ? (0) : (unsigned_short_int_Array_0[1][2]))) << unsigned_short_int_Array_0[1][2])) ? ((BOOL_unsigned_char_Array_0[0] && (unsigned_short_int_Array_0[1][2] == (unsigned_short_int_Array_0[1][1] * unsigned_short_int_Array_0[0][2]))) ? (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[0][2])) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[0][2]))) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) 2))) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[1][1])))) && ((unsigned_short_int_Array_0[0][1] != unsigned_short_int_Array_0[1][1]) ? ((unsigned_short_int_Array_0[0][1] <= unsigned_short_int_Array_0[0][0]) ? (float_Array_0[2] == ((float) ((((float_Array_0[0]) > (float_Array_0[1])) ? (float_Array_0[0]) : (float_Array_0[1]))))) : (float_Array_0[2] == ((float) float_Array_0[0]))) : (float_Array_0[2] == ((float) float_Array_0[0]))) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L88] EXPR (((last_1_unsigned_short_int_Array_0_0__0_ <= (last_1_unsigned_short_int_Array_0_0__0_ * last_1_unsigned_short_int_Array_0_1__2_)) ? (unsigned_short_int_Array_0[1][2] == ((unsigned short int) ((((unsigned_short_int_Array_0[0][2]) > ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0]))))) ? (unsigned_short_int_Array_0[0][2]) : ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0])))))))) : 1) && ((BOOL_unsigned_char_Array_0[0] || (unsigned_short_int_Array_0[1][1] == unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] <= (((((0) < (unsigned_short_int_Array_0[1][2])) ? (0) : (unsigned_short_int_Array_0[1][2]))) << unsigned_short_int_Array_0[1][2])) ? ((BOOL_unsigned_char_Array_0[0] && (unsigned_short_int_Array_0[1][2] == (unsigned_short_int_Array_0[1][1] * unsigned_short_int_Array_0[0][2]))) ? (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[0][2])) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[0][2]))) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) 2))) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[1][1])))) && ((unsigned_short_int_Array_0[0][1] != unsigned_short_int_Array_0[1][1]) ? ((unsigned_short_int_Array_0[0][1] <= unsigned_short_int_Array_0[0][0]) ? (float_Array_0[2] == ((float) ((((float_Array_0[0]) > (float_Array_0[1])) ? (float_Array_0[0]) : (float_Array_0[1]))))) : (float_Array_0[2] == ((float) float_Array_0[0]))) : (float_Array_0[2] == ((float) float_Array_0[0]))) [L88] EXPR unsigned_short_int_Array_0[0][1] [L88] EXPR unsigned_short_int_Array_0[1][1] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L88] EXPR (unsigned_short_int_Array_0[0][1] != unsigned_short_int_Array_0[1][1]) ? ((unsigned_short_int_Array_0[0][1] <= unsigned_short_int_Array_0[0][0]) ? (float_Array_0[2] == ((float) ((((float_Array_0[0]) > (float_Array_0[1])) ? (float_Array_0[0]) : (float_Array_0[1]))))) : (float_Array_0[2] == ((float) float_Array_0[0]))) : (float_Array_0[2] == ((float) float_Array_0[0])) [L88] EXPR float_Array_0[2] [L88] EXPR float_Array_0[0] [L88] EXPR (unsigned_short_int_Array_0[0][1] != unsigned_short_int_Array_0[1][1]) ? ((unsigned_short_int_Array_0[0][1] <= unsigned_short_int_Array_0[0][0]) ? (float_Array_0[2] == ((float) ((((float_Array_0[0]) > (float_Array_0[1])) ? (float_Array_0[0]) : (float_Array_0[1]))))) : (float_Array_0[2] == ((float) float_Array_0[0]))) : (float_Array_0[2] == ((float) float_Array_0[0])) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L88] EXPR (((last_1_unsigned_short_int_Array_0_0__0_ <= (last_1_unsigned_short_int_Array_0_0__0_ * last_1_unsigned_short_int_Array_0_1__2_)) ? (unsigned_short_int_Array_0[1][2] == ((unsigned short int) ((((unsigned_short_int_Array_0[0][2]) > ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0]))))) ? (unsigned_short_int_Array_0[0][2]) : ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0])))))))) : 1) && ((BOOL_unsigned_char_Array_0[0] || (unsigned_short_int_Array_0[1][1] == unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] <= (((((0) < (unsigned_short_int_Array_0[1][2])) ? (0) : (unsigned_short_int_Array_0[1][2]))) << unsigned_short_int_Array_0[1][2])) ? ((BOOL_unsigned_char_Array_0[0] && (unsigned_short_int_Array_0[1][2] == (unsigned_short_int_Array_0[1][1] * unsigned_short_int_Array_0[0][2]))) ? (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[0][2])) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[0][2]))) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) 2))) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[1][1])))) && ((unsigned_short_int_Array_0[0][1] != unsigned_short_int_Array_0[1][1]) ? ((unsigned_short_int_Array_0[0][1] <= unsigned_short_int_Array_0[0][0]) ? (float_Array_0[2] == ((float) ((((float_Array_0[0]) > (float_Array_0[1])) ? (float_Array_0[0]) : (float_Array_0[1]))))) : (float_Array_0[2] == ((float) float_Array_0[0]))) : (float_Array_0[2] == ((float) float_Array_0[0]))) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L88-L89] return (((last_1_unsigned_short_int_Array_0_0__0_ <= (last_1_unsigned_short_int_Array_0_0__0_ * last_1_unsigned_short_int_Array_0_1__2_)) ? (unsigned_short_int_Array_0[1][2] == ((unsigned short int) ((((unsigned_short_int_Array_0[0][2]) > ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0]))))) ? (unsigned_short_int_Array_0[0][2]) : ((((((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) > (unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] - unsigned_short_int_Array_0[0][1])) : (unsigned_short_int_Array_0[1][0])))))))) : 1) && ((BOOL_unsigned_char_Array_0[0] || (unsigned_short_int_Array_0[1][1] == unsigned_short_int_Array_0[1][0])) ? ((unsigned_short_int_Array_0[1][1] <= (((((0) < (unsigned_short_int_Array_0[1][2])) ? (0) : (unsigned_short_int_Array_0[1][2]))) << unsigned_short_int_Array_0[1][2])) ? ((BOOL_unsigned_char_Array_0[0] && (unsigned_short_int_Array_0[1][2] == (unsigned_short_int_Array_0[1][1] * unsigned_short_int_Array_0[0][2]))) ? (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[0][2])) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[0][2]))) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) 2))) : (unsigned_short_int_Array_0[0][0] == ((unsigned short int) unsigned_short_int_Array_0[1][1])))) && ((unsigned_short_int_Array_0[0][1] != unsigned_short_int_Array_0[1][1]) ? ((unsigned_short_int_Array_0[0][1] <= unsigned_short_int_Array_0[0][0]) ? (float_Array_0[2] == ((float) ((((float_Array_0[0]) > (float_Array_0[1])) ? (float_Array_0[0]) : (float_Array_0[1]))))) : (float_Array_0[2] == ((float) float_Array_0[0]))) : (float_Array_0[2] == ((float) float_Array_0[0]))) ; [L98] RET, EXPR property() [L98] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] [L19] reach_error() VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_short_int_Array_0_0__0_=8, last_1_unsigned_short_int_Array_0_1__2_=10, unsigned_short_int_Array_0={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 104 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.7s, OverallIterations: 22, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 16.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2301 SdHoareTripleChecker+Valid, 13.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2271 mSDsluCounter, 19717 SdHoareTripleChecker+Invalid, 11.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16134 mSDsCounter, 167 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8638 IncrementalHoareTripleChecker+Invalid, 8805 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 167 mSolverCounterUnsat, 3583 mSDtfsCounter, 8638 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 621 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1159occurred in iteration=14, InterpolantAutomatonStates: 164, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 21 MinimizatonAttempts, 2449 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 18.7s InterpolantComputationTime, 2748 NumberOfCodeBlocks, 2748 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 2398 ConstructedInterpolants, 0 QuantifiedInterpolants, 7170 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1013 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 23 InterpolantComputations, 21 PerfectInterpolantSequences, 6017/6072 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-23 22:35:57,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC --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 6c2afc665f9ec9bbf6f489827c9a63486fda067f850cc8b511cbd83d8b773bd8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:36:00,621 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:36:00,810 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-23 22:36:00,818 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:36:00,820 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:36:00,853 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:36:00,855 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:36:00,857 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:36:00,858 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:36:00,858 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:36:00,859 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:36:00,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:36:00,859 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:36:00,859 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:36:00,860 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:36:00,860 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:36:00,860 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:36:00,860 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:36:00,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:36:00,861 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:36:00,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:36:00,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:36:00,861 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:36:00,861 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 22:36:00,861 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-23 22:36:00,862 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-23 22:36:00,862 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:36:00,862 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:36:00,862 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:36:00,862 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:36:00,862 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:36:00,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:36:00,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:36:00,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:36:00,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:36:00,863 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:36:00,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:36:00,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:36:00,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:36:00,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:36:00,863 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:36:00,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:36:00,864 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:36:00,864 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:36:00,864 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-23 22:36:00,864 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-23 22:36:00,864 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:36:00,864 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:36:00,864 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:36:00,864 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:36:00,864 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_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC 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 -> 6c2afc665f9ec9bbf6f489827c9a63486fda067f850cc8b511cbd83d8b773bd8 [2024-11-23 22:36:01,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:36:01,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:36:01,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:36:01,275 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:36:01,275 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:36:01,277 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-2.i [2024-11-23 22:36:04,594 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/data/838287675/fe0a460c94d4451c90e074a143b37a77/FLAG411689754 [2024-11-23 22:36:04,954 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:36:04,958 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-2.i [2024-11-23 22:36:04,971 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/data/838287675/fe0a460c94d4451c90e074a143b37a77/FLAG411689754 [2024-11-23 22:36:04,994 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/data/838287675/fe0a460c94d4451c90e074a143b37a77 [2024-11-23 22:36:04,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:36:04,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:36:05,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:36:05,001 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:36:05,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:36:05,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:36:04" (1/1) ... [2024-11-23 22:36:05,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd0ae5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05, skipping insertion in model container [2024-11-23 22:36:05,011 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:36:04" (1/1) ... [2024-11-23 22:36:05,033 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:36:05,247 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_157d8081-4c37-4d5a-b9e3-86c5bcb90892/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-2.i[915,928] [2024-11-23 22:36:05,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:36:05,407 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:36:05,421 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_157d8081-4c37-4d5a-b9e3-86c5bcb90892/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-2.i[915,928] [2024-11-23 22:36:05,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:36:05,529 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:36:05,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05 WrapperNode [2024-11-23 22:36:05,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:36:05,533 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:36:05,533 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:36:05,534 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:36:05,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ... [2024-11-23 22:36:05,564 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ... [2024-11-23 22:36:05,634 INFO L138 Inliner]: procedures = 33, calls = 157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 499 [2024-11-23 22:36:05,638 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:36:05,639 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:36:05,639 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:36:05,639 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:36:05,656 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ... [2024-11-23 22:36:05,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ... [2024-11-23 22:36:05,670 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ... [2024-11-23 22:36:05,713 INFO L175 MemorySlicer]: Split 131 memory accesses to 4 slices as follows [2, 8, 31, 90]. 69 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 1, 3, 6]. The 15 writes are split as follows [0, 1, 5, 9]. [2024-11-23 22:36:05,713 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ... [2024-11-23 22:36:05,714 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ... [2024-11-23 22:36:05,757 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ... [2024-11-23 22:36:05,761 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ... [2024-11-23 22:36:05,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ... [2024-11-23 22:36:05,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ... [2024-11-23 22:36:05,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ... [2024-11-23 22:36:05,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:36:05,801 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:36:05,801 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:36:05,801 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:36:05,802 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ... [2024-11-23 22:36:05,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:36:05,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:05,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:36:05,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:36:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:36:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-23 22:36:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-23 22:36:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-23 22:36:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2024-11-23 22:36:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2024-11-23 22:36:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2024-11-23 22:36:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2024-11-23 22:36:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2024-11-23 22:36:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-23 22:36:05,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-23 22:36:05,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-23 22:36:05,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-23 22:36:05,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2024-11-23 22:36:05,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2024-11-23 22:36:05,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2024-11-23 22:36:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2024-11-23 22:36:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2024-11-23 22:36:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2024-11-23 22:36:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2024-11-23 22:36:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2024-11-23 22:36:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2024-11-23 22:36:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2024-11-23 22:36:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2024-11-23 22:36:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2024-11-23 22:36:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2024-11-23 22:36:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2024-11-23 22:36:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2024-11-23 22:36:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2024-11-23 22:36:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 22:36:05,899 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 22:36:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:36:05,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:36:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-23 22:36:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-23 22:36:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-11-23 22:36:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2024-11-23 22:36:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2024-11-23 22:36:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2024-11-23 22:36:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2024-11-23 22:36:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2024-11-23 22:36:06,124 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:36:06,126 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:36:07,014 INFO L? ?]: Removed 144 outVars from TransFormulas that were not future-live. [2024-11-23 22:36:07,014 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:36:07,033 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:36:07,033 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 22:36:07,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:36:07 BoogieIcfgContainer [2024-11-23 22:36:07,034 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:36:07,036 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:36:07,036 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:36:07,040 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:36:07,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:36:04" (1/3) ... [2024-11-23 22:36:07,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fcb046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:36:07, skipping insertion in model container [2024-11-23 22:36:07,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (2/3) ... [2024-11-23 22:36:07,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fcb046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:36:07, skipping insertion in model container [2024-11-23 22:36:07,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:36:07" (3/3) ... [2024-11-23 22:36:07,043 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-2.i [2024-11-23 22:36:07,069 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:36:07,071 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-a_file-2.i that has 2 procedures, 100 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 22:36:07,140 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:36:07,151 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;@7a659c05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:36:07,152 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 22:36:07,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 85 states have (on average 1.4588235294117646) internal successors, (124), 86 states have internal predecessors, (124), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-23 22:36:07,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-23 22:36:07,166 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:07,166 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:07,167 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:07,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:07,171 INFO L85 PathProgramCache]: Analyzing trace with hash 665478135, now seen corresponding path program 1 times [2024-11-23 22:36:07,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:36:07,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696646246] [2024-11-23 22:36:07,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:07,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:07,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:36:07,189 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:36:07,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-23 22:36:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:07,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 22:36:07,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:07,639 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-23 22:36:07,639 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:07,642 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:36:07,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696646246] [2024-11-23 22:36:07,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696646246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:07,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:07,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 22:36:07,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294079033] [2024-11-23 22:36:07,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:07,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 22:36:07,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:36:07,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 22:36:07,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:36:07,682 INFO L87 Difference]: Start difference. First operand has 100 states, 85 states have (on average 1.4588235294117646) internal successors, (124), 86 states have internal predecessors, (124), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:36:07,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:07,727 INFO L93 Difference]: Finished difference Result 193 states and 302 transitions. [2024-11-23 22:36:07,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 22:36:07,729 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2024-11-23 22:36:07,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:07,738 INFO L225 Difference]: With dead ends: 193 [2024-11-23 22:36:07,738 INFO L226 Difference]: Without dead ends: 96 [2024-11-23 22:36:07,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:36:07,750 INFO L435 NwaCegarLoop]: 141 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, 141 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 [2024-11-23 22:36:07,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:07,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-23 22:36:07,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-23 22:36:07,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 82 states have (on average 1.4268292682926829) internal successors, (117), 82 states have internal predecessors, (117), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-23 22:36:07,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 141 transitions. [2024-11-23 22:36:07,794 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 141 transitions. Word has length 100 [2024-11-23 22:36:07,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:07,796 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 141 transitions. [2024-11-23 22:36:07,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:36:07,797 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 141 transitions. [2024-11-23 22:36:07,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-23 22:36:07,802 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:07,803 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:07,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-23 22:36:08,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:08,004 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:08,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:08,005 INFO L85 PathProgramCache]: Analyzing trace with hash -321302581, now seen corresponding path program 1 times [2024-11-23 22:36:08,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:36:08,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912081595] [2024-11-23 22:36:08,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:08,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:08,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:36:08,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:36:08,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-23 22:36:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:08,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:36:08,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-23 22:36:08,403 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:08,403 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:36:08,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912081595] [2024-11-23 22:36:08,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912081595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:08,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:08,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:36:08,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231039905] [2024-11-23 22:36:08,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:08,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:08,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:36:08,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:08,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:08,406 INFO L87 Difference]: Start difference. First operand 96 states and 141 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:36:08,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:08,502 INFO L93 Difference]: Finished difference Result 191 states and 282 transitions. [2024-11-23 22:36:08,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:36:08,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2024-11-23 22:36:08,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:08,507 INFO L225 Difference]: With dead ends: 191 [2024-11-23 22:36:08,509 INFO L226 Difference]: Without dead ends: 98 [2024-11-23 22:36:08,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:08,511 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 0 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:08,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 406 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:08,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-23 22:36:08,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-23 22:36:08,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 84 states have (on average 1.4166666666666667) internal successors, (119), 84 states have internal predecessors, (119), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-23 22:36:08,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 143 transitions. [2024-11-23 22:36:08,536 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 143 transitions. Word has length 100 [2024-11-23 22:36:08,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:08,537 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 143 transitions. [2024-11-23 22:36:08,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:36:08,538 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 143 transitions. [2024-11-23 22:36:08,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-23 22:36:08,540 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:08,540 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:08,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-23 22:36:08,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:08,741 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:08,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:08,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1646158775, now seen corresponding path program 1 times [2024-11-23 22:36:08,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:36:08,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223916091] [2024-11-23 22:36:08,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:08,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:08,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:36:08,744 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:36:08,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-23 22:36:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:09,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 22:36:09,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:09,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:09,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 17 [2024-11-23 22:36:10,000 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:36:10,003 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:10,003 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:36:10,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223916091] [2024-11-23 22:36:10,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223916091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:10,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:10,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:36:10,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026534408] [2024-11-23 22:36:10,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:10,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:10,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:36:10,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:10,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:10,006 INFO L87 Difference]: Start difference. First operand 98 states and 143 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:36:10,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:10,510 INFO L93 Difference]: Finished difference Result 289 states and 424 transitions. [2024-11-23 22:36:10,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:36:10,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 100 [2024-11-23 22:36:10,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:10,517 INFO L225 Difference]: With dead ends: 289 [2024-11-23 22:36:10,520 INFO L226 Difference]: Without dead ends: 194 [2024-11-23 22:36:10,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:36:10,521 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 128 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:10,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 348 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 22:36:10,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-23 22:36:10,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 162. [2024-11-23 22:36:10,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 135 states have (on average 1.3925925925925926) internal successors, (188), 135 states have internal predecessors, (188), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-23 22:36:10,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 236 transitions. [2024-11-23 22:36:10,550 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 236 transitions. Word has length 100 [2024-11-23 22:36:10,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:10,551 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 236 transitions. [2024-11-23 22:36:10,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:36:10,551 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 236 transitions. [2024-11-23 22:36:10,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-23 22:36:10,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:10,553 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:10,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:10,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:10,754 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:10,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:10,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1349473664, now seen corresponding path program 1 times [2024-11-23 22:36:10,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:36:10,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064592446] [2024-11-23 22:36:10,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:10,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:10,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:36:10,757 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:36:10,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-23 22:36:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:11,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 22:36:11,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:36:11,083 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:11,083 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:36:11,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064592446] [2024-11-23 22:36:11,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064592446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:11,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:11,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:36:11,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437062659] [2024-11-23 22:36:11,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:11,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:36:11,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:36:11,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:36:11,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:36:11,087 INFO L87 Difference]: Start difference. First operand 162 states and 236 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:36:11,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:11,126 INFO L93 Difference]: Finished difference Result 266 states and 390 transitions. [2024-11-23 22:36:11,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:36:11,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 106 [2024-11-23 22:36:11,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:11,128 INFO L225 Difference]: With dead ends: 266 [2024-11-23 22:36:11,128 INFO L226 Difference]: Without dead ends: 164 [2024-11-23 22:36:11,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:36:11,130 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:11,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 274 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:11,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-23 22:36:11,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-11-23 22:36:11,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 137 states have (on average 1.3868613138686132) internal successors, (190), 137 states have internal predecessors, (190), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-23 22:36:11,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 238 transitions. [2024-11-23 22:36:11,164 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 238 transitions. Word has length 106 [2024-11-23 22:36:11,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:11,164 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 238 transitions. [2024-11-23 22:36:11,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:36:11,165 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 238 transitions. [2024-11-23 22:36:11,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-23 22:36:11,169 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:11,169 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:11,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-23 22:36:11,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:11,370 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:11,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:11,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1357145730, now seen corresponding path program 1 times [2024-11-23 22:36:11,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:36:11,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095289373] [2024-11-23 22:36:11,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:11,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:11,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:36:11,378 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:36:11,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-23 22:36:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:11,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 22:36:11,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:11,851 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:11,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2024-11-23 22:36:11,917 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:36:11,917 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:11,917 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:36:11,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095289373] [2024-11-23 22:36:11,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095289373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:11,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:11,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:36:11,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036934398] [2024-11-23 22:36:11,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:11,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:36:11,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:36:11,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:36:11,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:36:11,919 INFO L87 Difference]: Start difference. First operand 164 states and 238 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:36:12,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:12,548 INFO L93 Difference]: Finished difference Result 325 states and 470 transitions. [2024-11-23 22:36:12,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:12,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 106 [2024-11-23 22:36:12,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:12,551 INFO L225 Difference]: With dead ends: 325 [2024-11-23 22:36:12,551 INFO L226 Difference]: Without dead ends: 229 [2024-11-23 22:36:12,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:36:12,552 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 83 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:12,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 517 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 22:36:12,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-23 22:36:12,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 226. [2024-11-23 22:36:12,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 192 states have (on average 1.3854166666666667) internal successors, (266), 193 states have internal predecessors, (266), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-23 22:36:12,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 326 transitions. [2024-11-23 22:36:12,577 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 326 transitions. Word has length 106 [2024-11-23 22:36:12,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:12,577 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 326 transitions. [2024-11-23 22:36:12,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:36:12,578 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 326 transitions. [2024-11-23 22:36:12,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-23 22:36:12,579 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:12,579 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:12,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:12,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:12,784 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:12,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:12,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2058210308, now seen corresponding path program 1 times [2024-11-23 22:36:12,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:36:12,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210979124] [2024-11-23 22:36:12,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:12,785 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:12,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:36:12,787 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:36:12,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-23 22:36:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:13,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 22:36:13,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:13,167 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 19 treesize of output 1 [2024-11-23 22:36:13,187 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 23 treesize of output 23 [2024-11-23 22:36:13,229 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:13,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-23 22:36:13,391 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:13,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 22 [2024-11-23 22:36:13,496 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:36:13,497 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:13,497 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:36:13,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210979124] [2024-11-23 22:36:13,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210979124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:13,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:13,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 22:36:13,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041603561] [2024-11-23 22:36:13,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:13,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:36:13,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:36:13,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:36:13,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:36:13,499 INFO L87 Difference]: Start difference. First operand 226 states and 326 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:36:15,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:15,353 INFO L93 Difference]: Finished difference Result 702 states and 1013 transitions. [2024-11-23 22:36:15,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:36:15,354 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 106 [2024-11-23 22:36:15,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:15,359 INFO L225 Difference]: With dead ends: 702 [2024-11-23 22:36:15,359 INFO L226 Difference]: Without dead ends: 546 [2024-11-23 22:36:15,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:36:15,360 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 213 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:15,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1004 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 22:36:15,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2024-11-23 22:36:15,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 540. [2024-11-23 22:36:15,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 472 states have (on average 1.3898305084745763) internal successors, (656), 477 states have internal predecessors, (656), 60 states have call successors, (60), 7 states have call predecessors, (60), 7 states have return successors, (60), 55 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-23 22:36:15,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 776 transitions. [2024-11-23 22:36:15,420 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 776 transitions. Word has length 106 [2024-11-23 22:36:15,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:15,421 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 776 transitions. [2024-11-23 22:36:15,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:36:15,421 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 776 transitions. [2024-11-23 22:36:15,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 22:36:15,423 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:15,423 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:15,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:15,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:15,624 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:15,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:15,624 INFO L85 PathProgramCache]: Analyzing trace with hash 467761120, now seen corresponding path program 1 times [2024-11-23 22:36:15,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:36:15,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238068821] [2024-11-23 22:36:15,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:15,625 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:15,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:36:15,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:36:15,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-23 22:36:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:15,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 22:36:15,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:16,000 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 14 treesize of output 10 [2024-11-23 22:36:16,094 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 30 treesize of output 14 [2024-11-23 22:36:16,178 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 25 treesize of output 24 [2024-11-23 22:36:16,401 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:16,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2024-11-23 22:36:16,757 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:16,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 54 [2024-11-23 22:36:16,936 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:16,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 67 [2024-11-23 22:36:17,264 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:17,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 36 [2024-11-23 22:36:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-23 22:36:17,329 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:17,330 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:36:17,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238068821] [2024-11-23 22:36:17,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238068821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:17,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:17,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:36:17,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785323303] [2024-11-23 22:36:17,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:17,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:36:17,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:36:17,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:36:17,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:36:17,332 INFO L87 Difference]: Start difference. First operand 540 states and 776 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:36:19,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:19,662 INFO L93 Difference]: Finished difference Result 1274 states and 1825 transitions. [2024-11-23 22:36:19,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:36:19,663 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2024-11-23 22:36:19,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:19,670 INFO L225 Difference]: With dead ends: 1274 [2024-11-23 22:36:19,670 INFO L226 Difference]: Without dead ends: 832 [2024-11-23 22:36:19,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:36:19,674 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 507 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:19,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 700 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-23 22:36:19,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2024-11-23 22:36:19,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 824. [2024-11-23 22:36:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 735 states have (on average 1.398639455782313) internal successors, (1028), 744 states have internal predecessors, (1028), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 67 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-23 22:36:19,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1180 transitions. [2024-11-23 22:36:19,798 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1180 transitions. Word has length 108 [2024-11-23 22:36:19,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:19,798 INFO L471 AbstractCegarLoop]: Abstraction has 824 states and 1180 transitions. [2024-11-23 22:36:19,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:36:19,799 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1180 transitions. [2024-11-23 22:36:19,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 22:36:19,805 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:19,805 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:19,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-23 22:36:20,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:20,006 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:20,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:20,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1461961086, now seen corresponding path program 1 times [2024-11-23 22:36:20,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:36:20,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322239183] [2024-11-23 22:36:20,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:20,008 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:20,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:36:20,010 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:36:20,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-23 22:36:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:20,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 22:36:20,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:20,466 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:20,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 26 [2024-11-23 22:36:20,626 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:36:20,626 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:20,626 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:36:20,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322239183] [2024-11-23 22:36:20,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322239183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:20,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:20,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:36:20,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461408215] [2024-11-23 22:36:20,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:20,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:36:20,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:36:20,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:36:20,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:36:20,628 INFO L87 Difference]: Start difference. First operand 824 states and 1180 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:36:24,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:36:25,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:25,286 INFO L93 Difference]: Finished difference Result 1699 states and 2435 transitions. [2024-11-23 22:36:25,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:25,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 108 [2024-11-23 22:36:25,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:25,296 INFO L225 Difference]: With dead ends: 1699 [2024-11-23 22:36:25,296 INFO L226 Difference]: Without dead ends: 986 [2024-11-23 22:36:25,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:36:25,299 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 102 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:25,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 492 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-23 22:36:25,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-11-23 22:36:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 978. [2024-11-23 22:36:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 879 states have (on average 1.4027303754266212) internal successors, (1233), 890 states have internal predecessors, (1233), 84 states have call successors, (84), 14 states have call predecessors, (84), 14 states have return successors, (84), 73 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-23 22:36:25,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1401 transitions. [2024-11-23 22:36:25,402 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1401 transitions. Word has length 108 [2024-11-23 22:36:25,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:25,402 INFO L471 AbstractCegarLoop]: Abstraction has 978 states and 1401 transitions. [2024-11-23 22:36:25,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:36:25,404 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1401 transitions. [2024-11-23 22:36:25,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 22:36:25,407 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:25,407 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:25,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-11-23 22:36:25,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:25,608 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:25,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:25,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1884662912, now seen corresponding path program 1 times [2024-11-23 22:36:25,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:36:25,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877905162] [2024-11-23 22:36:25,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:25,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:25,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:36:25,611 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:36:25,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-23 22:36:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:25,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 22:36:25,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:25,930 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 19 treesize of output 1 [2024-11-23 22:36:25,936 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 19 treesize of output 1 [2024-11-23 22:36:25,942 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 14 treesize of output 10 [2024-11-23 22:36:26,029 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 30 treesize of output 14 [2024-11-23 22:36:26,259 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:26,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2024-11-23 22:36:26,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:26,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 63 [2024-11-23 22:36:26,651 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:26,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 33 [2024-11-23 22:36:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-23 22:36:26,710 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:26,710 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:36:26,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877905162] [2024-11-23 22:36:26,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877905162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:26,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:26,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:36:26,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892579454] [2024-11-23 22:36:26,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:26,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:36:26,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:36:26,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:36:26,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:36:26,712 INFO L87 Difference]: Start difference. First operand 978 states and 1401 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:36:29,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:29,240 INFO L93 Difference]: Finished difference Result 1943 states and 2781 transitions. [2024-11-23 22:36:29,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:36:29,242 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2024-11-23 22:36:29,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:29,250 INFO L225 Difference]: With dead ends: 1943 [2024-11-23 22:36:29,250 INFO L226 Difference]: Without dead ends: 1117 [2024-11-23 22:36:29,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:36:29,255 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 373 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:29,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 724 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-23 22:36:29,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2024-11-23 22:36:29,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1000. [2024-11-23 22:36:29,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 901 states have (on average 1.4028856825749167) internal successors, (1264), 912 states have internal predecessors, (1264), 84 states have call successors, (84), 14 states have call predecessors, (84), 14 states have return successors, (84), 73 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-23 22:36:29,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1432 transitions. [2024-11-23 22:36:29,354 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1432 transitions. Word has length 108 [2024-11-23 22:36:29,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:29,355 INFO L471 AbstractCegarLoop]: Abstraction has 1000 states and 1432 transitions. [2024-11-23 22:36:29,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:36:29,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1432 transitions. [2024-11-23 22:36:29,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 22:36:29,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:29,358 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:29,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:29,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:29,559 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:29,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:29,560 INFO L85 PathProgramCache]: Analyzing trace with hash -2021767842, now seen corresponding path program 1 times [2024-11-23 22:36:29,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:36:29,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016510788] [2024-11-23 22:36:29,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:29,561 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:29,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:36:29,563 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:36:29,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-23 22:36:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:29,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 22:36:29,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:29,883 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 14 treesize of output 10 [2024-11-23 22:36:30,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2024-11-23 22:36:30,727 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:30,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 37 [2024-11-23 22:36:31,400 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:31,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 59 [2024-11-23 22:36:31,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:31,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 63 [2024-11-23 22:36:31,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:31,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 86 treesize of output 40 [2024-11-23 22:36:32,107 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 173 proven. 18 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-23 22:36:32,107 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:36:32,476 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:36:32,477 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:36:32,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016510788] [2024-11-23 22:36:32,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016510788] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:32,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:32,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2024-11-23 22:36:32,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903219761] [2024-11-23 22:36:32,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:32,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:36:32,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:36:32,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:36:32,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:36:32,479 INFO L87 Difference]: Start difference. First operand 1000 states and 1432 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:36:33,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:33,283 INFO L93 Difference]: Finished difference Result 1831 states and 2616 transitions. [2024-11-23 22:36:33,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:33,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 108 [2024-11-23 22:36:33,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:33,291 INFO L225 Difference]: With dead ends: 1831 [2024-11-23 22:36:33,291 INFO L226 Difference]: Without dead ends: 986 [2024-11-23 22:36:33,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:36:33,293 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 200 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:33,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 434 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 22:36:33,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-11-23 22:36:33,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 922. [2024-11-23 22:36:33,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 824 states have (on average 1.395631067961165) internal successors, (1150), 833 states have internal predecessors, (1150), 80 states have call successors, (80), 17 states have call predecessors, (80), 17 states have return successors, (80), 71 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-23 22:36:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1310 transitions. [2024-11-23 22:36:33,379 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1310 transitions. Word has length 108 [2024-11-23 22:36:33,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:33,379 INFO L471 AbstractCegarLoop]: Abstraction has 922 states and 1310 transitions. [2024-11-23 22:36:33,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:36:33,380 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1310 transitions. [2024-11-23 22:36:33,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 22:36:33,383 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:33,383 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:33,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-11-23 22:36:33,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:33,584 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:33,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:33,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1558253376, now seen corresponding path program 1 times [2024-11-23 22:36:33,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:36:33,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997613466] [2024-11-23 22:36:33,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:33,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:33,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:36:33,594 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:36:33,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-23 22:36:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:34,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 22:36:34,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:34,037 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 14 treesize of output 10 [2024-11-23 22:36:34,223 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 34 treesize of output 27 [2024-11-23 22:36:34,422 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:34,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 30 [2024-11-23 22:36:34,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:34,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 21 [2024-11-23 22:36:34,880 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-23 22:36:34,880 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:34,880 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:36:34,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997613466] [2024-11-23 22:36:34,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997613466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:34,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:34,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 22:36:34,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043106811] [2024-11-23 22:36:34,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:34,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:36:34,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:36:34,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:36:34,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:36:34,882 INFO L87 Difference]: Start difference. First operand 922 states and 1310 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:36:37,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:37,536 INFO L93 Difference]: Finished difference Result 1697 states and 2414 transitions. [2024-11-23 22:36:37,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:36:37,538 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2024-11-23 22:36:37,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:37,544 INFO L225 Difference]: With dead ends: 1697 [2024-11-23 22:36:37,544 INFO L226 Difference]: Without dead ends: 934 [2024-11-23 22:36:37,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:36:37,546 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 282 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:37,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 775 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-23 22:36:37,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2024-11-23 22:36:37,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 925. [2024-11-23 22:36:37,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 827 states have (on average 1.3941958887545345) internal successors, (1153), 836 states have internal predecessors, (1153), 80 states have call successors, (80), 17 states have call predecessors, (80), 17 states have return successors, (80), 71 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-23 22:36:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1313 transitions. [2024-11-23 22:36:37,631 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1313 transitions. Word has length 109 [2024-11-23 22:36:37,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:37,632 INFO L471 AbstractCegarLoop]: Abstraction has 925 states and 1313 transitions. [2024-11-23 22:36:37,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:36:37,632 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1313 transitions. [2024-11-23 22:36:37,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 22:36:37,634 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:37,634 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:37,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-11-23 22:36:37,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:37,839 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:37,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:37,839 INFO L85 PathProgramCache]: Analyzing trace with hash -805893579, now seen corresponding path program 1 times [2024-11-23 22:36:37,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:36:37,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399664085] [2024-11-23 22:36:37,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:37,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:37,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:36:37,842 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:36:37,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-11-23 22:36:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:38,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-23 22:36:38,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:38,253 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 14 treesize of output 10 [2024-11-23 22:36:38,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-23 22:36:39,120 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:39,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 32 [2024-11-23 22:36:39,546 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:39,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 43 [2024-11-23 22:36:39,710 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:39,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 55 [2024-11-23 22:36:40,483 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:40,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 51 [2024-11-23 22:36:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 173 proven. 18 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-23 22:36:40,704 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:36:41,151 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:36:41,152 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:36:41,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399664085] [2024-11-23 22:36:41,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399664085] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:41,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:41,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 23 [2024-11-23 22:36:41,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64748314] [2024-11-23 22:36:41,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:41,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:36:41,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:36:41,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:36:41,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-23 22:36:41,154 INFO L87 Difference]: Start difference. First operand 925 states and 1313 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:36:42,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:42,362 INFO L93 Difference]: Finished difference Result 1973 states and 2803 transitions. [2024-11-23 22:36:42,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:36:42,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 109 [2024-11-23 22:36:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:42,367 INFO L225 Difference]: With dead ends: 1973 [2024-11-23 22:36:42,367 INFO L226 Difference]: Without dead ends: 1207 [2024-11-23 22:36:42,369 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2024-11-23 22:36:42,370 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 257 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:42,370 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 772 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 22:36:42,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2024-11-23 22:36:42,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1203. [2024-11-23 22:36:42,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1079 states have (on average 1.386468952734013) internal successors, (1496), 1092 states have internal predecessors, (1496), 102 states have call successors, (102), 21 states have call predecessors, (102), 21 states have return successors, (102), 89 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-23 22:36:42,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1700 transitions. [2024-11-23 22:36:42,470 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1700 transitions. Word has length 109 [2024-11-23 22:36:42,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:42,470 INFO L471 AbstractCegarLoop]: Abstraction has 1203 states and 1700 transitions. [2024-11-23 22:36:42,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:36:42,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1700 transitions. [2024-11-23 22:36:42,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 22:36:42,473 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:42,473 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:42,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-11-23 22:36:42,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:42,674 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:42,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:42,674 INFO L85 PathProgramCache]: Analyzing trace with hash -255979728, now seen corresponding path program 1 times [2024-11-23 22:36:42,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:36:42,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458925798] [2024-11-23 22:36:42,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:42,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:42,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:36:42,677 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:36:42,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-23 22:36:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:42,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 22:36:42,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:43,165 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:43,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 44 [2024-11-23 22:36:43,265 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:36:43,265 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:43,265 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:36:43,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458925798] [2024-11-23 22:36:43,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458925798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:43,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:43,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:36:43,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719117911] [2024-11-23 22:36:43,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:43,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:36:43,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:36:43,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:36:43,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:43,266 INFO L87 Difference]: Start difference. First operand 1203 states and 1700 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:36:44,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:44,778 INFO L93 Difference]: Finished difference Result 2920 states and 4131 transitions. [2024-11-23 22:36:44,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:36:44,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 109 [2024-11-23 22:36:44,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:44,786 INFO L225 Difference]: With dead ends: 2920 [2024-11-23 22:36:44,786 INFO L226 Difference]: Without dead ends: 1883 [2024-11-23 22:36:44,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:36:44,789 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 87 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:44,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 682 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 22:36:44,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2024-11-23 22:36:44,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1263. [2024-11-23 22:36:44,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1139 states have (on average 1.3880597014925373) internal successors, (1581), 1152 states have internal predecessors, (1581), 102 states have call successors, (102), 21 states have call predecessors, (102), 21 states have return successors, (102), 89 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-23 22:36:44,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1785 transitions. [2024-11-23 22:36:44,921 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1785 transitions. Word has length 109 [2024-11-23 22:36:44,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:44,924 INFO L471 AbstractCegarLoop]: Abstraction has 1263 states and 1785 transitions. [2024-11-23 22:36:44,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:36:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1785 transitions. [2024-11-23 22:36:44,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 22:36:44,927 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:44,927 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:44,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:45,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:45,128 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:45,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:45,129 INFO L85 PathProgramCache]: Analyzing trace with hash -957044306, now seen corresponding path program 1 times [2024-11-23 22:36:45,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:36:45,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750481143] [2024-11-23 22:36:45,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:45,129 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:36:45,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:36:45,131 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:36:45,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-23 22:36:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:45,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 22:36:45,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:45,618 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 14 treesize of output 10 [2024-11-23 22:36:45,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2024-11-23 22:36:46,231 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:46,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 43 [2024-11-23 22:36:46,723 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:46,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2024-11-23 22:36:46,905 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:46,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 64 [2024-11-23 22:36:47,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:47,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 32 [2024-11-23 22:36:47,204 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 181 proven. 18 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-23 22:36:47,204 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:36:47,953 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:36:47,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750481143] [2024-11-23 22:36:47,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750481143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:47,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [220177747] [2024-11-23 22:36:47,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:47,954 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 22:36:47,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 22:36:47,956 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 22:36:47,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-23 22:36:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:48,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 22:36:48,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:48,959 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 12 treesize of output 8 [2024-11-23 22:36:49,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2024-11-23 22:36:50,412 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:50,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 33 [2024-11-23 22:36:50,926 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:50,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 42 [2024-11-23 22:36:51,169 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:51,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 49 [2024-11-23 22:36:51,416 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:36:51,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 28 [2024-11-23 22:36:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 173 proven. 18 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-23 22:36:51,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:36:51,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [220177747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:51,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:36:51,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2024-11-23 22:36:51,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454390794] [2024-11-23 22:36:51,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 22:36:51,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-23 22:36:51,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:36:51,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-23 22:36:51,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1009, Unknown=0, NotChecked=0, Total=1260 [2024-11-23 22:36:51,779 INFO L87 Difference]: Start difference. First operand 1263 states and 1785 transitions. Second operand has 28 states, 24 states have (on average 4.791666666666667) internal successors, (115), 25 states have internal predecessors, (115), 11 states have call successors, (24), 9 states have call predecessors, (24), 11 states have return successors, (24), 9 states have call predecessors, (24), 11 states have call successors, (24) [2024-11-23 22:36:59,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:59,627 INFO L93 Difference]: Finished difference Result 2577 states and 3590 transitions. [2024-11-23 22:36:59,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-23 22:36:59,628 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 4.791666666666667) internal successors, (115), 25 states have internal predecessors, (115), 11 states have call successors, (24), 9 states have call predecessors, (24), 11 states have return successors, (24), 9 states have call predecessors, (24), 11 states have call successors, (24) Word has length 109 [2024-11-23 22:36:59,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:59,633 INFO L225 Difference]: With dead ends: 2577 [2024-11-23 22:36:59,633 INFO L226 Difference]: Without dead ends: 1488 [2024-11-23 22:36:59,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 287 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=695, Invalid=2167, Unknown=0, NotChecked=0, Total=2862 [2024-11-23 22:36:59,636 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 1072 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:59,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 1272 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-23 22:36:59,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2024-11-23 22:36:59,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 673. [2024-11-23 22:36:59,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 618 states have (on average 1.3932038834951457) internal successors, (861), 621 states have internal predecessors, (861), 40 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-23 22:36:59,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 941 transitions. [2024-11-23 22:36:59,738 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 941 transitions. Word has length 109 [2024-11-23 22:36:59,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:59,739 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 941 transitions. [2024-11-23 22:36:59,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 4.791666666666667) internal successors, (115), 25 states have internal predecessors, (115), 11 states have call successors, (24), 9 states have call predecessors, (24), 11 states have return successors, (24), 9 states have call predecessors, (24), 11 states have call successors, (24) [2024-11-23 22:36:59,739 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 941 transitions. [2024-11-23 22:36:59,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-23 22:36:59,741 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:59,741 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:59,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:59,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2024-11-23 22:37:00,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-23 22:37:00,145 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:00,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:00,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1192438108, now seen corresponding path program 1 times [2024-11-23 22:37:00,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:37:00,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426875240] [2024-11-23 22:37:00,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:00,146 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:37:00,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:37:00,148 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:37:00,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-11-23 22:37:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:00,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 22:37:00,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:00,500 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 8 treesize of output 1 [2024-11-23 22:37:00,507 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 19 treesize of output 1 [2024-11-23 22:37:00,514 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 19 treesize of output 1 [2024-11-23 22:37:00,520 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 19 treesize of output 1 [2024-11-23 22:37:00,559 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 23 treesize of output 23 [2024-11-23 22:37:00,608 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:00,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-23 22:37:00,795 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:00,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 22 [2024-11-23 22:37:00,966 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:37:00,966 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:37:00,966 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:37:00,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426875240] [2024-11-23 22:37:00,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426875240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:00,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:00,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:37:00,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836260513] [2024-11-23 22:37:00,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:00,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:37:00,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:37:00,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:37:00,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:37:00,969 INFO L87 Difference]: Start difference. First operand 673 states and 941 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:37:03,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:03,029 INFO L93 Difference]: Finished difference Result 1516 states and 2130 transitions. [2024-11-23 22:37:03,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 22:37:03,030 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 110 [2024-11-23 22:37:03,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:03,034 INFO L225 Difference]: With dead ends: 1516 [2024-11-23 22:37:03,034 INFO L226 Difference]: Without dead ends: 1029 [2024-11-23 22:37:03,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:37:03,037 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 263 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:03,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 1438 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 22:37:03,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2024-11-23 22:37:03,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 730. [2024-11-23 22:37:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 675 states have (on average 1.3955555555555557) internal successors, (942), 678 states have internal predecessors, (942), 40 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-23 22:37:03,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1022 transitions. [2024-11-23 22:37:03,128 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1022 transitions. Word has length 110 [2024-11-23 22:37:03,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:03,128 INFO L471 AbstractCegarLoop]: Abstraction has 730 states and 1022 transitions. [2024-11-23 22:37:03,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:37:03,129 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1022 transitions. [2024-11-23 22:37:03,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-23 22:37:03,130 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:03,130 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:03,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-11-23 22:37:03,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:37:03,331 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:03,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:03,332 INFO L85 PathProgramCache]: Analyzing trace with hash 491373530, now seen corresponding path program 1 times [2024-11-23 22:37:03,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:37:03,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683058899] [2024-11-23 22:37:03,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:03,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:37:03,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:37:03,334 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:37:03,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-23 22:37:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:03,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:37:03,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:03,674 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:03,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 26 [2024-11-23 22:37:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:37:03,751 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:37:03,752 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:37:03,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683058899] [2024-11-23 22:37:03,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683058899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:03,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:03,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:37:03,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543988192] [2024-11-23 22:37:03,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:03,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:37:03,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:37:03,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:37:03,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:37:03,753 INFO L87 Difference]: Start difference. First operand 730 states and 1022 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:37:05,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:37:08,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:08,477 INFO L93 Difference]: Finished difference Result 1513 states and 2139 transitions. [2024-11-23 22:37:08,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:37:08,481 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 110 [2024-11-23 22:37:08,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:08,483 INFO L225 Difference]: With dead ends: 1513 [2024-11-23 22:37:08,483 INFO L226 Difference]: Without dead ends: 994 [2024-11-23 22:37:08,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:37:08,484 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 74 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:08,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 516 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-23 22:37:08,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2024-11-23 22:37:08,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 795. [2024-11-23 22:37:08,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 735 states have (on average 1.398639455782313) internal successors, (1028), 739 states have internal predecessors, (1028), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-23 22:37:08,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1116 transitions. [2024-11-23 22:37:08,581 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1116 transitions. Word has length 110 [2024-11-23 22:37:08,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:08,582 INFO L471 AbstractCegarLoop]: Abstraction has 795 states and 1116 transitions. [2024-11-23 22:37:08,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:37:08,582 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1116 transitions. [2024-11-23 22:37:08,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 22:37:08,584 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:08,584 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:08,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-11-23 22:37:08,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:37:08,785 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:08,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:08,786 INFO L85 PathProgramCache]: Analyzing trace with hash -325296740, now seen corresponding path program 1 times [2024-11-23 22:37:08,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:37:08,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491938354] [2024-11-23 22:37:08,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:08,788 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:37:08,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:37:08,792 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:37:08,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-11-23 22:37:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:09,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 22:37:09,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:09,206 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 19 treesize of output 1 [2024-11-23 22:37:09,214 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 19 treesize of output 1 [2024-11-23 22:37:09,220 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 19 treesize of output 1 [2024-11-23 22:37:09,229 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 14 treesize of output 10 [2024-11-23 22:37:09,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:09,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 41 [2024-11-23 22:37:09,744 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:09,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 45 [2024-11-23 22:37:09,959 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:09,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 27 [2024-11-23 22:37:10,054 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-23 22:37:10,054 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:37:10,055 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:37:10,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491938354] [2024-11-23 22:37:10,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491938354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:10,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:10,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 22:37:10,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751003540] [2024-11-23 22:37:10,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:10,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:37:10,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:37:10,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:37:10,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:37:10,057 INFO L87 Difference]: Start difference. First operand 795 states and 1116 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:37:12,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:12,150 INFO L93 Difference]: Finished difference Result 1448 states and 2049 transitions. [2024-11-23 22:37:12,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:37:12,151 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2024-11-23 22:37:12,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:12,153 INFO L225 Difference]: With dead ends: 1448 [2024-11-23 22:37:12,153 INFO L226 Difference]: Without dead ends: 864 [2024-11-23 22:37:12,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:37:12,154 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 295 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:12,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 462 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-23 22:37:12,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2024-11-23 22:37:12,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 795. [2024-11-23 22:37:12,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 735 states have (on average 1.3972789115646258) internal successors, (1027), 739 states have internal predecessors, (1027), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-23 22:37:12,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1115 transitions. [2024-11-23 22:37:12,254 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1115 transitions. Word has length 111 [2024-11-23 22:37:12,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:12,254 INFO L471 AbstractCegarLoop]: Abstraction has 795 states and 1115 transitions. [2024-11-23 22:37:12,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:37:12,255 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1115 transitions. [2024-11-23 22:37:12,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 22:37:12,256 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:12,256 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:12,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2024-11-23 22:37:12,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:37:12,457 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:12,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:12,458 INFO L85 PathProgramCache]: Analyzing trace with hash -484825120, now seen corresponding path program 1 times [2024-11-23 22:37:12,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:37:12,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686608493] [2024-11-23 22:37:12,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:12,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:37:12,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:37:12,461 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:37:12,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-11-23 22:37:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:12,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-23 22:37:12,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:13,021 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 8 treesize of output 1 [2024-11-23 22:37:13,461 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 68 treesize of output 32 [2024-11-23 22:37:14,439 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 113 treesize of output 65 [2024-11-23 22:37:14,792 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:14,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 194 treesize of output 80 [2024-11-23 22:37:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-23 22:37:15,072 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:37:15,670 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:37:15,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686608493] [2024-11-23 22:37:15,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686608493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:15,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1023099490] [2024-11-23 22:37:15,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:15,671 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 22:37:15,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 22:37:15,673 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 22:37:15,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-11-23 22:37:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:16,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-23 22:37:16,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:17,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 22:37:17,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2024-11-23 22:37:18,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 59 [2024-11-23 22:37:19,301 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:19,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 176 treesize of output 80 [2024-11-23 22:37:19,338 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-23 22:37:19,338 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:37:19,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1023099490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:19,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:37:19,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2024-11-23 22:37:19,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079298831] [2024-11-23 22:37:19,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 22:37:19,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 22:37:19,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:37:19,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 22:37:19,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2024-11-23 22:37:19,617 INFO L87 Difference]: Start difference. First operand 795 states and 1115 transitions. Second operand has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 17 states have internal predecessors, (109), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-23 22:37:23,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:23,095 INFO L93 Difference]: Finished difference Result 1712 states and 2383 transitions. [2024-11-23 22:37:23,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:37:23,096 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 17 states have internal predecessors, (109), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 111 [2024-11-23 22:37:23,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:23,103 INFO L225 Difference]: With dead ends: 1712 [2024-11-23 22:37:23,103 INFO L226 Difference]: Without dead ends: 1710 [2024-11-23 22:37:23,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 258 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2024-11-23 22:37:23,104 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 439 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:23,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 1473 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-23 22:37:23,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2024-11-23 22:37:23,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1698. [2024-11-23 22:37:23,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1572 states have (on average 1.3899491094147582) internal successors, (2185), 1588 states have internal predecessors, (2185), 92 states have call successors, (92), 33 states have call predecessors, (92), 33 states have return successors, (92), 76 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-23 22:37:23,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2369 transitions. [2024-11-23 22:37:23,334 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2369 transitions. Word has length 111 [2024-11-23 22:37:23,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:23,335 INFO L471 AbstractCegarLoop]: Abstraction has 1698 states and 2369 transitions. [2024-11-23 22:37:23,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 17 states have internal predecessors, (109), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-23 22:37:23,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2369 transitions. [2024-11-23 22:37:23,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 22:37:23,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:23,338 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:23,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2024-11-23 22:37:23,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2024-11-23 22:37:23,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-23 22:37:23,739 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:23,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:23,740 INFO L85 PathProgramCache]: Analyzing trace with hash -314889227, now seen corresponding path program 1 times [2024-11-23 22:37:23,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:37:23,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621231856] [2024-11-23 22:37:23,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:23,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:37:23,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:37:23,743 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:37:23,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-11-23 22:37:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:24,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 22:37:24,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:24,172 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:24,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 25 [2024-11-23 22:37:24,258 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:37:24,258 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:37:24,258 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:37:24,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621231856] [2024-11-23 22:37:24,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621231856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:24,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:24,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:37:24,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963263770] [2024-11-23 22:37:24,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:24,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:37:24,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:37:24,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:37:24,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:37:24,260 INFO L87 Difference]: Start difference. First operand 1698 states and 2369 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:37:25,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:25,653 INFO L93 Difference]: Finished difference Result 3535 states and 4956 transitions. [2024-11-23 22:37:25,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:37:25,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 111 [2024-11-23 22:37:25,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:25,659 INFO L225 Difference]: With dead ends: 3535 [2024-11-23 22:37:25,659 INFO L226 Difference]: Without dead ends: 2243 [2024-11-23 22:37:25,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:37:25,661 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 76 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:25,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 510 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 22:37:25,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2024-11-23 22:37:25,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 1586. [2024-11-23 22:37:25,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1586 states, 1460 states have (on average 1.3794520547945206) internal successors, (2014), 1476 states have internal predecessors, (2014), 92 states have call successors, (92), 33 states have call predecessors, (92), 33 states have return successors, (92), 76 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-23 22:37:25,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2198 transitions. [2024-11-23 22:37:25,891 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2198 transitions. Word has length 111 [2024-11-23 22:37:25,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:25,892 INFO L471 AbstractCegarLoop]: Abstraction has 1586 states and 2198 transitions. [2024-11-23 22:37:25,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:37:25,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2198 transitions. [2024-11-23 22:37:25,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 22:37:25,894 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:25,894 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:25,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2024-11-23 22:37:26,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:37:26,095 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:26,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:26,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1015953805, now seen corresponding path program 1 times [2024-11-23 22:37:26,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:37:26,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023846123] [2024-11-23 22:37:26,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:26,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:37:26,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:37:26,099 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:37:26,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2024-11-23 22:37:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:26,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-23 22:37:26,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:26,583 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 8 treesize of output 1 [2024-11-23 22:37:26,588 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 19 treesize of output 1 [2024-11-23 22:37:26,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-23 22:37:27,153 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:27,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2024-11-23 22:37:27,704 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:27,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 66 [2024-11-23 22:37:27,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:27,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 74 [2024-11-23 22:37:28,862 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 143 proven. 18 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-11-23 22:37:28,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:37:29,477 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:37:29,477 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:37:29,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023846123] [2024-11-23 22:37:29,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023846123] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:29,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:37:29,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2024-11-23 22:37:29,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927994761] [2024-11-23 22:37:29,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:29,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:37:29,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:37:29,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:37:29,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:37:29,479 INFO L87 Difference]: Start difference. First operand 1586 states and 2198 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:37:30,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:30,705 INFO L93 Difference]: Finished difference Result 2917 states and 4063 transitions. [2024-11-23 22:37:30,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:37:30,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 111 [2024-11-23 22:37:30,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:30,713 INFO L225 Difference]: With dead ends: 2917 [2024-11-23 22:37:30,713 INFO L226 Difference]: Without dead ends: 1701 [2024-11-23 22:37:30,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:37:30,716 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 91 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:30,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 462 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 22:37:30,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2024-11-23 22:37:30,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1672. [2024-11-23 22:37:30,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 1535 states have (on average 1.3706840390879478) internal successors, (2104), 1554 states have internal predecessors, (2104), 100 states have call successors, (100), 36 states have call predecessors, (100), 36 states have return successors, (100), 81 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:37:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2304 transitions. [2024-11-23 22:37:30,898 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2304 transitions. Word has length 111 [2024-11-23 22:37:30,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:30,899 INFO L471 AbstractCegarLoop]: Abstraction has 1672 states and 2304 transitions. [2024-11-23 22:37:30,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:37:30,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2304 transitions. [2024-11-23 22:37:30,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 22:37:30,901 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:30,901 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:30,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2024-11-23 22:37:31,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:37:31,102 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:31,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:31,103 INFO L85 PathProgramCache]: Analyzing trace with hash -568103228, now seen corresponding path program 1 times [2024-11-23 22:37:31,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:37:31,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484950149] [2024-11-23 22:37:31,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:31,104 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:37:31,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:37:31,106 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:37:31,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2024-11-23 22:37:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:31,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 22:37:31,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:31,516 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 19 treesize of output 1 [2024-11-23 22:37:31,526 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 14 treesize of output 10 [2024-11-23 22:37:31,650 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 30 treesize of output 14 [2024-11-23 22:37:31,742 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 30 treesize of output 14 [2024-11-23 22:37:32,021 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:32,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2024-11-23 22:37:32,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:32,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 54 [2024-11-23 22:37:32,449 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:32,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 27 [2024-11-23 22:37:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-23 22:37:32,560 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:37:32,560 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:37:32,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484950149] [2024-11-23 22:37:32,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484950149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:32,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:32,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 22:37:32,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041661897] [2024-11-23 22:37:32,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:32,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:37:32,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:37:32,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:37:32,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:37:32,562 INFO L87 Difference]: Start difference. First operand 1672 states and 2304 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:37:34,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:34,899 INFO L93 Difference]: Finished difference Result 3092 states and 4283 transitions. [2024-11-23 22:37:34,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:37:34,900 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2024-11-23 22:37:34,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:34,907 INFO L225 Difference]: With dead ends: 3092 [2024-11-23 22:37:34,907 INFO L226 Difference]: Without dead ends: 1784 [2024-11-23 22:37:34,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:37:34,910 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 197 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:34,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 657 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-23 22:37:34,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2024-11-23 22:37:35,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1672. [2024-11-23 22:37:35,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 1535 states have (on average 1.3680781758957654) internal successors, (2100), 1554 states have internal predecessors, (2100), 100 states have call successors, (100), 36 states have call predecessors, (100), 36 states have return successors, (100), 81 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:37:35,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2300 transitions. [2024-11-23 22:37:35,072 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2300 transitions. Word has length 111 [2024-11-23 22:37:35,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:35,072 INFO L471 AbstractCegarLoop]: Abstraction has 1672 states and 2300 transitions. [2024-11-23 22:37:35,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:37:35,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2300 transitions. [2024-11-23 22:37:35,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 22:37:35,074 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:35,075 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:35,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2024-11-23 22:37:35,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:37:35,279 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:35,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:35,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1077993419, now seen corresponding path program 1 times [2024-11-23 22:37:35,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:37:35,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74254490] [2024-11-23 22:37:35,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:35,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:37:35,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:37:35,287 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:37:35,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2024-11-23 22:37:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:35,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-23 22:37:35,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:35,831 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 19 treesize of output 1 [2024-11-23 22:37:35,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-23 22:37:36,234 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:36,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2024-11-23 22:37:37,053 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:37,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 76 [2024-11-23 22:37:37,349 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:37,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 89 [2024-11-23 22:37:38,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:38,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 162 treesize of output 74 [2024-11-23 22:37:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 151 proven. 18 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-23 22:37:38,439 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:37:39,505 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:37:39,505 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:37:39,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74254490] [2024-11-23 22:37:39,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74254490] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:39,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:37:39,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 23 [2024-11-23 22:37:39,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609445226] [2024-11-23 22:37:39,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:39,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:37:39,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:37:39,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:37:39,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-11-23 22:37:39,508 INFO L87 Difference]: Start difference. First operand 1672 states and 2300 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:37:43,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:43,138 INFO L93 Difference]: Finished difference Result 3301 states and 4558 transitions. [2024-11-23 22:37:43,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:37:43,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 111 [2024-11-23 22:37:43,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:43,146 INFO L225 Difference]: With dead ends: 3301 [2024-11-23 22:37:43,146 INFO L226 Difference]: Without dead ends: 1993 [2024-11-23 22:37:43,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2024-11-23 22:37:43,149 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 176 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:43,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 739 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-23 22:37:43,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2024-11-23 22:37:43,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1672. [2024-11-23 22:37:43,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 1535 states have (on average 1.3648208469055374) internal successors, (2095), 1554 states have internal predecessors, (2095), 100 states have call successors, (100), 36 states have call predecessors, (100), 36 states have return successors, (100), 81 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:37:43,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2295 transitions. [2024-11-23 22:37:43,349 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2295 transitions. Word has length 111 [2024-11-23 22:37:43,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:43,350 INFO L471 AbstractCegarLoop]: Abstraction has 1672 states and 2295 transitions. [2024-11-23 22:37:43,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:37:43,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2295 transitions. [2024-11-23 22:37:43,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 22:37:43,355 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:43,356 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:43,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2024-11-23 22:37:43,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:37:43,556 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:43,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:43,557 INFO L85 PathProgramCache]: Analyzing trace with hash -963734855, now seen corresponding path program 1 times [2024-11-23 22:37:43,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:37:43,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458302053] [2024-11-23 22:37:43,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:43,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:37:43,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:37:43,559 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:37:43,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2024-11-23 22:37:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:43,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-23 22:37:43,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:43,930 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 8 treesize of output 1 [2024-11-23 22:37:43,935 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 14 treesize of output 10 [2024-11-23 22:37:44,024 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 30 treesize of output 14 [2024-11-23 22:37:44,102 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 25 treesize of output 24 [2024-11-23 22:37:44,612 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:44,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 79 [2024-11-23 22:37:44,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:44,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 94 treesize of output 93 [2024-11-23 22:37:45,555 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:45,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 120 treesize of output 56 [2024-11-23 22:37:45,670 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-23 22:37:45,671 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:37:45,671 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:37:45,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458302053] [2024-11-23 22:37:45,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458302053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:45,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:45,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:37:45,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89013903] [2024-11-23 22:37:45,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:45,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:37:45,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:37:45,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:37:45,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:37:45,672 INFO L87 Difference]: Start difference. First operand 1672 states and 2295 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:37:51,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:51,050 INFO L93 Difference]: Finished difference Result 3441 states and 4744 transitions. [2024-11-23 22:37:51,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:37:51,052 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2024-11-23 22:37:51,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:51,060 INFO L225 Difference]: With dead ends: 3441 [2024-11-23 22:37:51,060 INFO L226 Difference]: Without dead ends: 2128 [2024-11-23 22:37:51,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:37:51,063 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 344 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:51,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 803 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-23 22:37:51,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2024-11-23 22:37:51,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 1667. [2024-11-23 22:37:51,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1530 states have (on average 1.3627450980392157) internal successors, (2085), 1549 states have internal predecessors, (2085), 100 states have call successors, (100), 36 states have call predecessors, (100), 36 states have return successors, (100), 81 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:37:51,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2285 transitions. [2024-11-23 22:37:51,240 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2285 transitions. Word has length 111 [2024-11-23 22:37:51,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:51,241 INFO L471 AbstractCegarLoop]: Abstraction has 1667 states and 2285 transitions. [2024-11-23 22:37:51,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:37:51,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2285 transitions. [2024-11-23 22:37:51,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 22:37:51,243 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:51,244 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:51,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2024-11-23 22:37:51,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:37:51,445 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:51,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:51,445 INFO L85 PathProgramCache]: Analyzing trace with hash -2131870879, now seen corresponding path program 1 times [2024-11-23 22:37:51,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:37:51,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272164973] [2024-11-23 22:37:51,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:51,446 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:37:51,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:37:51,448 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:37:51,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2024-11-23 22:37:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:51,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-23 22:37:51,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:51,994 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 14 treesize of output 10 [2024-11-23 22:37:52,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-23 22:37:52,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:52,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 37 [2024-11-23 22:37:54,043 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:54,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 92 [2024-11-23 22:37:54,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:54,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 74 [2024-11-23 22:37:56,149 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:37:56,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 100 treesize of output 48 [2024-11-23 22:37:56,353 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 173 proven. 18 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-23 22:37:56,353 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:37:57,335 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:37:57,335 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:37:57,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272164973] [2024-11-23 22:37:57,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272164973] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:57,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:37:57,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [20] total 26 [2024-11-23 22:37:57,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169113059] [2024-11-23 22:37:57,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:57,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:37:57,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:37:57,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:37:57,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2024-11-23 22:37:57,337 INFO L87 Difference]: Start difference. First operand 1667 states and 2285 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:38:00,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:00,085 INFO L93 Difference]: Finished difference Result 3335 states and 4603 transitions. [2024-11-23 22:38:00,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:38:00,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 111 [2024-11-23 22:38:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:00,094 INFO L225 Difference]: With dead ends: 3335 [2024-11-23 22:38:00,094 INFO L226 Difference]: Without dead ends: 2032 [2024-11-23 22:38:00,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2024-11-23 22:38:00,100 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 358 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:00,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 713 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-23 22:38:00,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2024-11-23 22:38:00,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1717. [2024-11-23 22:38:00,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1580 states have (on average 1.3658227848101265) internal successors, (2158), 1599 states have internal predecessors, (2158), 100 states have call successors, (100), 36 states have call predecessors, (100), 36 states have return successors, (100), 81 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:38:00,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2358 transitions. [2024-11-23 22:38:00,305 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2358 transitions. Word has length 111 [2024-11-23 22:38:00,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:00,305 INFO L471 AbstractCegarLoop]: Abstraction has 1717 states and 2358 transitions. [2024-11-23 22:38:00,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:38:00,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2358 transitions. [2024-11-23 22:38:00,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 22:38:00,307 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:00,307 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:00,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2024-11-23 22:38:00,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:00,508 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:38:00,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:00,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1430806301, now seen corresponding path program 1 times [2024-11-23 22:38:00,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:38:00,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541986464] [2024-11-23 22:38:00,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:00,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:00,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:38:00,511 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:38:00,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2024-11-23 22:38:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:00,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-23 22:38:00,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:38:00,997 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 8 treesize of output 1 [2024-11-23 22:38:01,003 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 19 treesize of output 1 [2024-11-23 22:38:01,010 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 14 treesize of output 10 [2024-11-23 22:38:01,136 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 30 treesize of output 14 [2024-11-23 22:38:01,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:38:01,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 67 [2024-11-23 22:38:01,779 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:38:01,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 79 [2024-11-23 22:38:02,392 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:38:02,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 106 treesize of output 54 [2024-11-23 22:38:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-23 22:38:02,511 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:38:02,511 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:38:02,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541986464] [2024-11-23 22:38:02,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541986464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:38:02,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:38:02,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 22:38:02,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861559118] [2024-11-23 22:38:02,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:02,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:38:02,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:38:02,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:38:02,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:38:02,512 INFO L87 Difference]: Start difference. First operand 1717 states and 2358 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:38:06,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:06,462 INFO L93 Difference]: Finished difference Result 3507 states and 4837 transitions. [2024-11-23 22:38:06,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:38:06,463 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2024-11-23 22:38:06,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:06,471 INFO L225 Difference]: With dead ends: 3507 [2024-11-23 22:38:06,472 INFO L226 Difference]: Without dead ends: 2182 [2024-11-23 22:38:06,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:38:06,474 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 437 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:06,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 725 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-23 22:38:06,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2024-11-23 22:38:06,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 1713. [2024-11-23 22:38:06,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1713 states, 1576 states have (on average 1.3623096446700507) internal successors, (2147), 1595 states have internal predecessors, (2147), 100 states have call successors, (100), 36 states have call predecessors, (100), 36 states have return successors, (100), 81 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:38:06,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2347 transitions. [2024-11-23 22:38:06,671 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2347 transitions. Word has length 111 [2024-11-23 22:38:06,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:06,672 INFO L471 AbstractCegarLoop]: Abstraction has 1713 states and 2347 transitions. [2024-11-23 22:38:06,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:38:06,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2347 transitions. [2024-11-23 22:38:06,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 22:38:06,674 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:06,674 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:06,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2024-11-23 22:38:06,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:06,875 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:38:06,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:06,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2029082911, now seen corresponding path program 1 times [2024-11-23 22:38:06,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:38:06,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798356167] [2024-11-23 22:38:06,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:06,876 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:06,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:38:06,880 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:38:06,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2024-11-23 22:38:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:07,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 22:38:07,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:38:07,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:38:07,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 25 [2024-11-23 22:38:07,381 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:38:07,381 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:38:07,381 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:38:07,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798356167] [2024-11-23 22:38:07,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798356167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:38:07,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:38:07,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:38:07,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229356177] [2024-11-23 22:38:07,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:07,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:38:07,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:38:07,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:38:07,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:38:07,384 INFO L87 Difference]: Start difference. First operand 1713 states and 2347 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:38:09,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:09,304 INFO L93 Difference]: Finished difference Result 3123 states and 4290 transitions. [2024-11-23 22:38:09,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:38:09,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 111 [2024-11-23 22:38:09,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:09,312 INFO L225 Difference]: With dead ends: 3123 [2024-11-23 22:38:09,312 INFO L226 Difference]: Without dead ends: 1750 [2024-11-23 22:38:09,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:38:09,314 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 102 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:09,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 560 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 22:38:09,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2024-11-23 22:38:09,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1597. [2024-11-23 22:38:09,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 1460 states have (on average 1.3554794520547946) internal successors, (1979), 1479 states have internal predecessors, (1979), 100 states have call successors, (100), 36 states have call predecessors, (100), 36 states have return successors, (100), 81 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:38:09,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 2179 transitions. [2024-11-23 22:38:09,509 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 2179 transitions. Word has length 111 [2024-11-23 22:38:09,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:09,510 INFO L471 AbstractCegarLoop]: Abstraction has 1597 states and 2179 transitions. [2024-11-23 22:38:09,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:38:09,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2179 transitions. [2024-11-23 22:38:09,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 22:38:09,511 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:09,512 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:09,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2024-11-23 22:38:09,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:09,712 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:38:09,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:09,713 INFO L85 PathProgramCache]: Analyzing trace with hash 379116537, now seen corresponding path program 1 times [2024-11-23 22:38:09,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:38:09,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520217296] [2024-11-23 22:38:09,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:09,713 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:09,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:38:09,715 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:38:09,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2024-11-23 22:38:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:09,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:38:09,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:38:10,672 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 53 proven. 30 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-23 22:38:10,673 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:38:10,947 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:38:10,947 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:38:10,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520217296] [2024-11-23 22:38:10,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520217296] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 22:38:10,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:38:10,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2024-11-23 22:38:10,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736440238] [2024-11-23 22:38:10,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:10,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:38:10,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:38:10,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:38:10,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:38:10,949 INFO L87 Difference]: Start difference. First operand 1597 states and 2179 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:38:11,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:11,319 INFO L93 Difference]: Finished difference Result 3596 states and 4994 transitions. [2024-11-23 22:38:11,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:38:11,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 112 [2024-11-23 22:38:11,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:11,325 INFO L225 Difference]: With dead ends: 3596 [2024-11-23 22:38:11,325 INFO L226 Difference]: Without dead ends: 2339 [2024-11-23 22:38:11,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:38:11,327 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 55 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:11,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 615 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:38:11,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2024-11-23 22:38:11,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 1989. [2024-11-23 22:38:11,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1989 states, 1852 states have (on average 1.367170626349892) internal successors, (2532), 1871 states have internal predecessors, (2532), 100 states have call successors, (100), 36 states have call predecessors, (100), 36 states have return successors, (100), 81 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:38:11,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 2732 transitions. [2024-11-23 22:38:11,615 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 2732 transitions. Word has length 112 [2024-11-23 22:38:11,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:11,615 INFO L471 AbstractCegarLoop]: Abstraction has 1989 states and 2732 transitions. [2024-11-23 22:38:11,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:38:11,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 2732 transitions. [2024-11-23 22:38:11,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 22:38:11,617 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:11,617 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:11,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2024-11-23 22:38:11,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:11,818 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:38:11,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:11,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1426321797, now seen corresponding path program 1 times [2024-11-23 22:38:11,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:38:11,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676411629] [2024-11-23 22:38:11,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:11,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:11,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:38:11,821 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:38:11,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2024-11-23 22:38:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:12,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-23 22:38:12,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:38:12,175 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 8 treesize of output 1 [2024-11-23 22:38:12,179 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 19 treesize of output 1 [2024-11-23 22:38:12,184 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 19 treesize of output 1 [2024-11-23 22:38:12,191 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 14 treesize of output 10 [2024-11-23 22:38:12,353 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 26 treesize of output 25 [2024-11-23 22:38:12,678 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:38:12,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 53 [2024-11-23 22:38:12,921 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-23 22:38:12,921 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:38:12,921 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:38:12,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676411629] [2024-11-23 22:38:12,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676411629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:38:12,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:38:12,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:38:12,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228353107] [2024-11-23 22:38:12,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:12,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:38:12,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:38:12,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:38:12,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:38:12,923 INFO L87 Difference]: Start difference. First operand 1989 states and 2732 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:38:14,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:14,838 INFO L93 Difference]: Finished difference Result 4128 states and 5672 transitions. [2024-11-23 22:38:14,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:38:14,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2024-11-23 22:38:14,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:14,844 INFO L225 Difference]: With dead ends: 4128 [2024-11-23 22:38:14,844 INFO L226 Difference]: Without dead ends: 2585 [2024-11-23 22:38:14,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:38:14,846 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 211 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:14,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 517 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 22:38:14,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2024-11-23 22:38:15,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 1967. [2024-11-23 22:38:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1967 states, 1830 states have (on average 1.3617486338797815) internal successors, (2492), 1849 states have internal predecessors, (2492), 100 states have call successors, (100), 36 states have call predecessors, (100), 36 states have return successors, (100), 81 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:38:15,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1967 states to 1967 states and 2692 transitions. [2024-11-23 22:38:15,036 INFO L78 Accepts]: Start accepts. Automaton has 1967 states and 2692 transitions. Word has length 112 [2024-11-23 22:38:15,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:15,037 INFO L471 AbstractCegarLoop]: Abstraction has 1967 states and 2692 transitions. [2024-11-23 22:38:15,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:38:15,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1967 states and 2692 transitions. [2024-11-23 22:38:15,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 22:38:15,038 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:15,038 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:15,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2024-11-23 22:38:15,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:15,239 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:38:15,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:15,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1740773656, now seen corresponding path program 1 times [2024-11-23 22:38:15,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:38:15,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936939275] [2024-11-23 22:38:15,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:15,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:15,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:38:15,242 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:38:15,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2024-11-23 22:38:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:15,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:38:15,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:38:15,857 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 79 treesize of output 43 [2024-11-23 22:38:16,016 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 108 proven. 8 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-23 22:38:16,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:38:16,417 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 49 treesize of output 25 [2024-11-23 22:38:16,449 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-23 22:38:16,449 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:38:16,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936939275] [2024-11-23 22:38:16,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936939275] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:38:16,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:38:16,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2024-11-23 22:38:16,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974831081] [2024-11-23 22:38:16,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 22:38:16,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 22:38:16,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:38:16,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 22:38:16,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:38:16,451 INFO L87 Difference]: Start difference. First operand 1967 states and 2692 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 22:38:18,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:18,213 INFO L93 Difference]: Finished difference Result 3810 states and 5192 transitions. [2024-11-23 22:38:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 22:38:18,214 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 113 [2024-11-23 22:38:18,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:18,219 INFO L225 Difference]: With dead ends: 3810 [2024-11-23 22:38:18,219 INFO L226 Difference]: Without dead ends: 2005 [2024-11-23 22:38:18,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2024-11-23 22:38:18,222 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 124 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:18,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 930 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 22:38:18,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2024-11-23 22:38:18,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1953. [2024-11-23 22:38:18,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1816 states have (on average 1.3568281938325992) internal successors, (2464), 1835 states have internal predecessors, (2464), 100 states have call successors, (100), 36 states have call predecessors, (100), 36 states have return successors, (100), 81 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:38:18,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 2664 transitions. [2024-11-23 22:38:18,584 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 2664 transitions. Word has length 113 [2024-11-23 22:38:18,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:18,585 INFO L471 AbstractCegarLoop]: Abstraction has 1953 states and 2664 transitions. [2024-11-23 22:38:18,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 22:38:18,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 2664 transitions. [2024-11-23 22:38:18,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 22:38:18,587 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:18,587 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:18,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2024-11-23 22:38:18,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:18,788 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:38:18,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:18,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1145440530, now seen corresponding path program 1 times [2024-11-23 22:38:18,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:38:18,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656454120] [2024-11-23 22:38:18,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:18,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:18,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:38:18,790 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:38:18,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2024-11-23 22:38:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:19,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 22:38:19,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:38:19,217 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:38:19,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2024-11-23 22:38:19,270 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:38:19,270 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:38:19,270 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:38:19,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656454120] [2024-11-23 22:38:19,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656454120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:38:19,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:38:19,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:38:19,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253352443] [2024-11-23 22:38:19,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:19,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:38:19,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:38:19,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:38:19,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:38:19,272 INFO L87 Difference]: Start difference. First operand 1953 states and 2664 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:38:20,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:20,283 INFO L93 Difference]: Finished difference Result 3994 states and 5411 transitions. [2024-11-23 22:38:20,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:38:20,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2024-11-23 22:38:20,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:20,289 INFO L225 Difference]: With dead ends: 3994 [2024-11-23 22:38:20,290 INFO L226 Difference]: Without dead ends: 2485 [2024-11-23 22:38:20,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:38:20,294 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 63 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:20,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 504 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 22:38:20,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2024-11-23 22:38:20,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2350. [2024-11-23 22:38:20,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2350 states, 2176 states have (on average 1.338235294117647) internal successors, (2912), 2204 states have internal predecessors, (2912), 128 states have call successors, (128), 45 states have call predecessors, (128), 45 states have return successors, (128), 100 states have call predecessors, (128), 128 states have call successors, (128) [2024-11-23 22:38:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 3168 transitions. [2024-11-23 22:38:20,634 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 3168 transitions. Word has length 113 [2024-11-23 22:38:20,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:20,634 INFO L471 AbstractCegarLoop]: Abstraction has 2350 states and 3168 transitions. [2024-11-23 22:38:20,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:38:20,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 3168 transitions. [2024-11-23 22:38:20,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 22:38:20,635 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:20,635 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:20,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2024-11-23 22:38:20,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:20,836 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:38:20,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:20,836 INFO L85 PathProgramCache]: Analyzing trace with hash -134847892, now seen corresponding path program 1 times [2024-11-23 22:38:20,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:38:20,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699840343] [2024-11-23 22:38:20,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:20,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:20,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:38:20,839 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:38:20,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2024-11-23 22:38:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:21,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-23 22:38:21,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:38:21,220 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 8 treesize of output 1 [2024-11-23 22:38:21,226 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 19 treesize of output 1 [2024-11-23 22:38:21,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-23 22:38:21,866 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:38:21,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2024-11-23 22:38:22,200 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:38:22,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 44 [2024-11-23 22:38:22,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:38:22,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 68 [2024-11-23 22:38:23,320 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:38:23,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 122 treesize of output 58 [2024-11-23 22:38:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 143 proven. 18 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-11-23 22:38:23,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:38:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:38:23,833 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:38:23,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699840343] [2024-11-23 22:38:23,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699840343] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 22:38:23,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:38:23,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 21 [2024-11-23 22:38:23,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711674117] [2024-11-23 22:38:23,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:23,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:38:23,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:38:23,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:38:23,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-11-23 22:38:23,835 INFO L87 Difference]: Start difference. First operand 2350 states and 3168 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:38:25,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:25,294 INFO L93 Difference]: Finished difference Result 4781 states and 6434 transitions. [2024-11-23 22:38:25,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:38:25,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2024-11-23 22:38:25,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:25,302 INFO L225 Difference]: With dead ends: 4781 [2024-11-23 22:38:25,302 INFO L226 Difference]: Without dead ends: 2893 [2024-11-23 22:38:25,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2024-11-23 22:38:25,306 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 204 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:25,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 588 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 22:38:25,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2024-11-23 22:38:25,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2169. [2024-11-23 22:38:25,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2023 states have (on average 1.343549184379634) internal successors, (2718), 2044 states have internal predecessors, (2718), 106 states have call successors, (106), 39 states have call predecessors, (106), 39 states have return successors, (106), 85 states have call predecessors, (106), 106 states have call successors, (106) [2024-11-23 22:38:25,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 2930 transitions. [2024-11-23 22:38:25,692 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 2930 transitions. Word has length 113 [2024-11-23 22:38:25,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:25,693 INFO L471 AbstractCegarLoop]: Abstraction has 2169 states and 2930 transitions. [2024-11-23 22:38:25,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:38:25,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 2930 transitions. [2024-11-23 22:38:25,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 22:38:25,695 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:25,695 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:25,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2024-11-23 22:38:25,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:25,896 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:38:25,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:25,896 INFO L85 PathProgramCache]: Analyzing trace with hash 451958122, now seen corresponding path program 1 times [2024-11-23 22:38:25,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:38:25,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022636849] [2024-11-23 22:38:25,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:25,897 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:25,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:38:25,898 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:38:25,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2024-11-23 22:38:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:26,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:38:26,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:38:26,774 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 53 proven. 30 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-23 22:38:26,774 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:38:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:38:26,987 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:38:26,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022636849] [2024-11-23 22:38:26,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022636849] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 22:38:26,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:38:26,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2024-11-23 22:38:26,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165329430] [2024-11-23 22:38:26,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:26,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:38:26,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:38:26,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:38:26,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:38:26,988 INFO L87 Difference]: Start difference. First operand 2169 states and 2930 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:38:27,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:27,369 INFO L93 Difference]: Finished difference Result 4185 states and 5663 transitions. [2024-11-23 22:38:27,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:38:27,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2024-11-23 22:38:27,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:27,377 INFO L225 Difference]: With dead ends: 4185 [2024-11-23 22:38:27,378 INFO L226 Difference]: Without dead ends: 2478 [2024-11-23 22:38:27,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:38:27,380 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 59 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:27,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 563 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:38:27,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2024-11-23 22:38:27,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2169. [2024-11-23 22:38:27,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2023 states have (on average 1.3321799307958477) internal successors, (2695), 2044 states have internal predecessors, (2695), 106 states have call successors, (106), 39 states have call predecessors, (106), 39 states have return successors, (106), 85 states have call predecessors, (106), 106 states have call successors, (106) [2024-11-23 22:38:27,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 2907 transitions. [2024-11-23 22:38:27,752 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 2907 transitions. Word has length 113 [2024-11-23 22:38:27,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:27,753 INFO L471 AbstractCegarLoop]: Abstraction has 2169 states and 2907 transitions. [2024-11-23 22:38:27,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:38:27,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 2907 transitions. [2024-11-23 22:38:27,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 22:38:27,755 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:27,755 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:27,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2024-11-23 22:38:27,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:27,957 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:38:27,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:27,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2021223072, now seen corresponding path program 1 times [2024-11-23 22:38:27,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:38:27,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810445528] [2024-11-23 22:38:27,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:27,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:27,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:38:27,961 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:38:27,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2024-11-23 22:38:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:28,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 22:38:28,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:38:28,428 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 8 treesize of output 1 [2024-11-23 22:38:28,433 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 14 treesize of output 10 [2024-11-23 22:38:28,523 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 30 treesize of output 14 [2024-11-23 22:38:28,603 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 30 treesize of output 14 [2024-11-23 22:38:28,789 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:38:28,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2024-11-23 22:38:28,913 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:38:28,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 39 [2024-11-23 22:38:29,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:38:29,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 21 [2024-11-23 22:38:29,287 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-23 22:38:29,287 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:38:29,287 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:38:29,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810445528] [2024-11-23 22:38:29,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810445528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:38:29,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:38:29,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:38:29,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869681220] [2024-11-23 22:38:29,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:29,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:38:29,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:38:29,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:38:29,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:38:29,289 INFO L87 Difference]: Start difference. First operand 2169 states and 2907 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:38:32,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:32,734 INFO L93 Difference]: Finished difference Result 4198 states and 5595 transitions. [2024-11-23 22:38:32,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:38:32,735 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2024-11-23 22:38:32,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:32,744 INFO L225 Difference]: With dead ends: 4198 [2024-11-23 22:38:32,744 INFO L226 Difference]: Without dead ends: 2491 [2024-11-23 22:38:32,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:38:32,747 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 188 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:32,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1167 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-23 22:38:32,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2491 states. [2024-11-23 22:38:33,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2491 to 2161. [2024-11-23 22:38:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2161 states, 2015 states have (on average 1.329528535980149) internal successors, (2679), 2036 states have internal predecessors, (2679), 106 states have call successors, (106), 39 states have call predecessors, (106), 39 states have return successors, (106), 85 states have call predecessors, (106), 106 states have call successors, (106) [2024-11-23 22:38:33,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2161 states to 2161 states and 2891 transitions. [2024-11-23 22:38:33,133 INFO L78 Accepts]: Start accepts. Automaton has 2161 states and 2891 transitions. Word has length 113 [2024-11-23 22:38:33,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:33,134 INFO L471 AbstractCegarLoop]: Abstraction has 2161 states and 2891 transitions. [2024-11-23 22:38:33,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:38:33,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2161 states and 2891 transitions. [2024-11-23 22:38:33,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 22:38:33,136 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:33,136 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:33,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2024-11-23 22:38:33,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:33,337 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:38:33,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:33,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1777999483, now seen corresponding path program 1 times [2024-11-23 22:38:33,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:38:33,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166984360] [2024-11-23 22:38:33,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:33,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:33,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:38:33,341 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:38:33,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2024-11-23 22:38:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:33,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-23 22:38:33,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:38:33,829 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 14 treesize of output 10 [2024-11-23 22:38:33,956 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 30 treesize of output 14 [2024-11-23 22:38:34,059 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 25 treesize of output 24 [2024-11-23 22:38:34,522 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:38:34,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 54 [2024-11-23 22:38:34,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:38:34,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 67 [2024-11-23 22:38:35,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:38:35,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 41 [2024-11-23 22:38:35,471 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-23 22:38:35,471 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:38:35,471 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:38:35,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166984360] [2024-11-23 22:38:35,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166984360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:38:35,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:38:35,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:38:35,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469181380] [2024-11-23 22:38:35,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:35,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:38:35,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:38:35,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:38:35,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:38:35,473 INFO L87 Difference]: Start difference. First operand 2161 states and 2891 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:38:41,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:41,200 INFO L93 Difference]: Finished difference Result 4222 states and 5609 transitions. [2024-11-23 22:38:41,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-23 22:38:41,201 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 113 [2024-11-23 22:38:41,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:41,208 INFO L225 Difference]: With dead ends: 4222 [2024-11-23 22:38:41,209 INFO L226 Difference]: Without dead ends: 2523 [2024-11-23 22:38:41,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2024-11-23 22:38:41,212 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 306 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:41,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 1528 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-23 22:38:41,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2523 states. [2024-11-23 22:38:41,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2523 to 2183. [2024-11-23 22:38:41,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2183 states, 2037 states have (on average 1.32793323514973) internal successors, (2705), 2058 states have internal predecessors, (2705), 106 states have call successors, (106), 39 states have call predecessors, (106), 39 states have return successors, (106), 85 states have call predecessors, (106), 106 states have call successors, (106) [2024-11-23 22:38:41,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 2917 transitions. [2024-11-23 22:38:41,569 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 2917 transitions. Word has length 113 [2024-11-23 22:38:41,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:41,570 INFO L471 AbstractCegarLoop]: Abstraction has 2183 states and 2917 transitions. [2024-11-23 22:38:41,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:38:41,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 2917 transitions. [2024-11-23 22:38:41,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 22:38:41,572 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:41,572 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:41,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2024-11-23 22:38:41,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:41,773 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:38:41,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:41,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1497462438, now seen corresponding path program 1 times [2024-11-23 22:38:41,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:38:41,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187857910] [2024-11-23 22:38:41,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:41,774 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:41,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:38:41,778 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:38:41,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2024-11-23 22:38:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:42,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-23 22:38:42,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:38:42,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 22:38:42,713 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 66 treesize of output 30 [2024-11-23 22:38:43,573 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 111 treesize of output 63 [2024-11-23 22:38:43,910 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:38:43,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 192 treesize of output 78 [2024-11-23 22:38:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-23 22:38:44,152 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:38:44,754 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:38:44,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187857910] [2024-11-23 22:38:44,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187857910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:38:44,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [614328199] [2024-11-23 22:38:44,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:44,754 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 22:38:44,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 22:38:44,759 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 22:38:44,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2024-11-23 22:38:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:46,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-23 22:38:46,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:38:46,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 22:38:47,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2024-11-23 22:38:48,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 57 [2024-11-23 22:38:49,478 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:38:49,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 174 treesize of output 78 [2024-11-23 22:38:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-23 22:38:49,527 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:38:49,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [614328199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:38:49,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:38:49,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 23 [2024-11-23 22:38:49,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322095592] [2024-11-23 22:38:49,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 22:38:49,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-23 22:38:49,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:38:49,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-23 22:38:49,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2024-11-23 22:38:49,855 INFO L87 Difference]: Start difference. First operand 2183 states and 2917 transitions. Second operand has 24 states, 22 states have (on average 5.409090909090909) internal successors, (119), 21 states have internal predecessors, (119), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-23 22:38:54,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:54,310 INFO L93 Difference]: Finished difference Result 2433 states and 3194 transitions. [2024-11-23 22:38:54,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 22:38:54,311 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 5.409090909090909) internal successors, (119), 21 states have internal predecessors, (119), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) Word has length 113 [2024-11-23 22:38:54,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:54,316 INFO L225 Difference]: With dead ends: 2433 [2024-11-23 22:38:54,316 INFO L226 Difference]: Without dead ends: 2431 [2024-11-23 22:38:54,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 255 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=371, Invalid=1791, Unknown=0, NotChecked=0, Total=2162 [2024-11-23 22:38:54,318 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 613 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:54,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 1792 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-23 22:38:54,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2024-11-23 22:38:54,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1964. [2024-11-23 22:38:54,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1964 states, 1816 states have (on average 1.3342511013215859) internal successors, (2423), 1834 states have internal predecessors, (2423), 100 states have call successors, (100), 47 states have call predecessors, (100), 47 states have return successors, (100), 82 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:38:54,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 2623 transitions. [2024-11-23 22:38:54,773 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 2623 transitions. Word has length 113 [2024-11-23 22:38:54,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:54,773 INFO L471 AbstractCegarLoop]: Abstraction has 1964 states and 2623 transitions. [2024-11-23 22:38:54,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 5.409090909090909) internal successors, (119), 21 states have internal predecessors, (119), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-23 22:38:54,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 2623 transitions. [2024-11-23 22:38:54,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-23 22:38:54,775 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:54,775 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:54,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2024-11-23 22:38:54,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2024-11-23 22:38:55,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-23 22:38:55,176 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:38:55,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:55,177 INFO L85 PathProgramCache]: Analyzing trace with hash -64930967, now seen corresponding path program 1 times [2024-11-23 22:38:55,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:38:55,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479820096] [2024-11-23 22:38:55,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:55,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:38:55,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:38:55,180 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:38:55,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2024-11-23 22:38:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:55,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 22:38:55,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:38:55,634 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:38:55,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 17 [2024-11-23 22:38:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:38:55,677 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:38:55,677 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:38:55,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479820096] [2024-11-23 22:38:55,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479820096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:38:55,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:38:55,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:38:55,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648562841] [2024-11-23 22:38:55,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:55,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:38:55,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:38:55,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:38:55,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:38:55,678 INFO L87 Difference]: Start difference. First operand 1964 states and 2623 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:38:59,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:39:01,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:39:05,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:39:09,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:39:14,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:39:15,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:39:15,833 INFO L93 Difference]: Finished difference Result 3600 states and 4787 transitions. [2024-11-23 22:39:15,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:39:15,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 114 [2024-11-23 22:39:15,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:39:15,839 INFO L225 Difference]: With dead ends: 3600 [2024-11-23 22:39:15,839 INFO L226 Difference]: Without dead ends: 2086 [2024-11-23 22:39:15,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:39:15,841 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 75 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:39:15,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 463 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 3 Unknown, 0 Unchecked, 19.7s Time] [2024-11-23 22:39:15,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2024-11-23 22:39:16,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 1964. [2024-11-23 22:39:16,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1964 states, 1814 states have (on average 1.3280044101433297) internal successors, (2409), 1832 states have internal predecessors, (2409), 100 states have call successors, (100), 49 states have call predecessors, (100), 49 states have return successors, (100), 82 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:39:16,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 2609 transitions. [2024-11-23 22:39:16,266 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 2609 transitions. Word has length 114 [2024-11-23 22:39:16,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:39:16,267 INFO L471 AbstractCegarLoop]: Abstraction has 1964 states and 2609 transitions. [2024-11-23 22:39:16,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:39:16,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 2609 transitions. [2024-11-23 22:39:16,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-23 22:39:16,269 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:39:16,269 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:39:16,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2024-11-23 22:39:16,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:39:16,472 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:39:16,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:39:16,473 INFO L85 PathProgramCache]: Analyzing trace with hash 941171818, now seen corresponding path program 1 times [2024-11-23 22:39:16,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:39:16,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299847330] [2024-11-23 22:39:16,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:39:16,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:39:16,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:39:16,476 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:39:16,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2024-11-23 22:39:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:39:17,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-23 22:39:17,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:39:17,076 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 14 treesize of output 10 [2024-11-23 22:39:17,174 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 25 treesize of output 24 [2024-11-23 22:39:17,353 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:39:17,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2024-11-23 22:39:17,883 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:39:17,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 58 [2024-11-23 22:39:18,171 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:39:18,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 62 [2024-11-23 22:39:18,591 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:39:18,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 40 [2024-11-23 22:39:18,858 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-23 22:39:18,858 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:39:18,858 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:39:18,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299847330] [2024-11-23 22:39:18,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299847330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:39:18,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:39:18,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:39:18,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584756295] [2024-11-23 22:39:18,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:39:18,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:39:18,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:39:18,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:39:18,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:39:18,860 INFO L87 Difference]: Start difference. First operand 1964 states and 2609 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-23 22:39:23,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:39:23,503 INFO L93 Difference]: Finished difference Result 3698 states and 4874 transitions. [2024-11-23 22:39:23,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:39:23,504 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 114 [2024-11-23 22:39:23,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:39:23,507 INFO L225 Difference]: With dead ends: 3698 [2024-11-23 22:39:23,507 INFO L226 Difference]: Without dead ends: 2184 [2024-11-23 22:39:23,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:39:23,509 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 388 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:39:23,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1119 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-23 22:39:23,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2024-11-23 22:39:23,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 1942. [2024-11-23 22:39:23,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1792 states have (on average 1.3286830357142858) internal successors, (2381), 1810 states have internal predecessors, (2381), 100 states have call successors, (100), 49 states have call predecessors, (100), 49 states have return successors, (100), 82 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:39:23,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 2581 transitions. [2024-11-23 22:39:23,934 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 2581 transitions. Word has length 114 [2024-11-23 22:39:23,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:39:23,934 INFO L471 AbstractCegarLoop]: Abstraction has 1942 states and 2581 transitions. [2024-11-23 22:39:23,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-23 22:39:23,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 2581 transitions. [2024-11-23 22:39:23,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-23 22:39:23,935 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:39:23,935 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:39:23,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2024-11-23 22:39:24,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:39:24,135 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:39:24,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:39:24,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1257528018, now seen corresponding path program 1 times [2024-11-23 22:39:24,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:39:24,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668477741] [2024-11-23 22:39:24,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:39:24,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:39:24,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:39:24,138 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:39:24,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2024-11-23 22:39:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:39:24,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 22:39:24,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:39:24,467 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 12 treesize of output 8 [2024-11-23 22:39:24,564 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 37 treesize of output 25 [2024-11-23 22:39:24,643 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:39:24,644 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:39:24,644 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:39:24,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668477741] [2024-11-23 22:39:24,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668477741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:39:24,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:39:24,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:39:24,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590380448] [2024-11-23 22:39:24,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:39:24,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:39:24,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:39:24,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:39:24,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:39:24,645 INFO L87 Difference]: Start difference. First operand 1942 states and 2581 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:39:26,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:39:26,190 INFO L93 Difference]: Finished difference Result 4927 states and 6538 transitions. [2024-11-23 22:39:26,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:39:26,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 116 [2024-11-23 22:39:26,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:39:26,194 INFO L225 Difference]: With dead ends: 4927 [2024-11-23 22:39:26,194 INFO L226 Difference]: Without dead ends: 3435 [2024-11-23 22:39:26,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:39:26,196 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 117 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:39:26,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 1111 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 22:39:26,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2024-11-23 22:39:26,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 2589. [2024-11-23 22:39:26,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2589 states, 2439 states have (on average 1.3202132021320214) internal successors, (3220), 2457 states have internal predecessors, (3220), 100 states have call successors, (100), 49 states have call predecessors, (100), 49 states have return successors, (100), 82 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:39:26,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 3420 transitions. [2024-11-23 22:39:26,611 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 3420 transitions. Word has length 116 [2024-11-23 22:39:26,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:39:26,612 INFO L471 AbstractCegarLoop]: Abstraction has 2589 states and 3420 transitions. [2024-11-23 22:39:26,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:39:26,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 3420 transitions. [2024-11-23 22:39:26,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-23 22:39:26,614 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:39:26,614 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:39:26,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2024-11-23 22:39:26,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:39:26,815 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:39:26,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:39:26,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1354085321, now seen corresponding path program 1 times [2024-11-23 22:39:26,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:39:26,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278974123] [2024-11-23 22:39:26,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:39:26,816 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:39:26,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:39:26,821 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:39:26,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2024-11-23 22:39:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:39:27,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 22:39:27,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:39:27,386 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:39:27,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2024-11-23 22:39:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:39:27,446 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:39:27,446 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:39:27,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278974123] [2024-11-23 22:39:27,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278974123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:39:27,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:39:27,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:39:27,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67586941] [2024-11-23 22:39:27,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:39:27,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:39:27,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:39:27,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:39:27,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:39:27,448 INFO L87 Difference]: Start difference. First operand 2589 states and 3420 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:39:28,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:39:28,904 INFO L93 Difference]: Finished difference Result 4696 states and 6183 transitions. [2024-11-23 22:39:28,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:39:28,905 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 116 [2024-11-23 22:39:28,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:39:28,909 INFO L225 Difference]: With dead ends: 4696 [2024-11-23 22:39:28,909 INFO L226 Difference]: Without dead ends: 2693 [2024-11-23 22:39:28,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:39:28,912 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 70 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:39:28,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 579 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 22:39:28,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2024-11-23 22:39:29,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 2368. [2024-11-23 22:39:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2368 states, 2235 states have (on average 1.3288590604026846) internal successors, (2970), 2248 states have internal predecessors, (2970), 88 states have call successors, (88), 44 states have call predecessors, (88), 44 states have return successors, (88), 75 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-23 22:39:29,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 3146 transitions. [2024-11-23 22:39:29,188 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 3146 transitions. Word has length 116 [2024-11-23 22:39:29,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:39:29,188 INFO L471 AbstractCegarLoop]: Abstraction has 2368 states and 3146 transitions. [2024-11-23 22:39:29,188 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:39:29,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 3146 transitions. [2024-11-23 22:39:29,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-23 22:39:29,190 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:39:29,190 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:39:29,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2024-11-23 22:39:29,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:39:29,390 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:39:29,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:39:29,391 INFO L85 PathProgramCache]: Analyzing trace with hash -343492683, now seen corresponding path program 1 times [2024-11-23 22:39:29,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:39:29,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412246567] [2024-11-23 22:39:29,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:39:29,391 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:39:29,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:39:29,396 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:39:29,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2024-11-23 22:39:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:39:29,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-23 22:39:29,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:39:29,796 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 8 treesize of output 1 [2024-11-23 22:39:29,801 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 19 treesize of output 1 [2024-11-23 22:39:29,807 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 14 treesize of output 10 [2024-11-23 22:39:29,893 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 30 treesize of output 14 [2024-11-23 22:39:29,992 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 26 treesize of output 25 [2024-11-23 22:39:30,136 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:39:30,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 54 [2024-11-23 22:39:30,518 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:39:30,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 46 [2024-11-23 22:39:30,548 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-23 22:39:30,548 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:39:30,548 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:39:30,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412246567] [2024-11-23 22:39:30,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412246567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:39:30,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:39:30,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:39:30,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875391456] [2024-11-23 22:39:30,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:39:30,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:39:30,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:39:30,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:39:30,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:39:30,549 INFO L87 Difference]: Start difference. First operand 2368 states and 3146 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:39:32,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:39:32,261 INFO L93 Difference]: Finished difference Result 4350 states and 5752 transitions. [2024-11-23 22:39:32,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:39:32,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 116 [2024-11-23 22:39:32,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:39:32,267 INFO L225 Difference]: With dead ends: 4350 [2024-11-23 22:39:32,268 INFO L226 Difference]: Without dead ends: 2568 [2024-11-23 22:39:32,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:39:32,271 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 213 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:39:32,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 407 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 22:39:32,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2024-11-23 22:39:32,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2368. [2024-11-23 22:39:32,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2368 states, 2235 states have (on average 1.32751677852349) internal successors, (2967), 2248 states have internal predecessors, (2967), 88 states have call successors, (88), 44 states have call predecessors, (88), 44 states have return successors, (88), 75 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-23 22:39:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 3143 transitions. [2024-11-23 22:39:32,543 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 3143 transitions. Word has length 116 [2024-11-23 22:39:32,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:39:32,544 INFO L471 AbstractCegarLoop]: Abstraction has 2368 states and 3143 transitions. [2024-11-23 22:39:32,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:39:32,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 3143 transitions. [2024-11-23 22:39:32,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-23 22:39:32,545 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:39:32,545 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:39:32,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2024-11-23 22:39:32,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:39:32,745 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:39:32,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:39:32,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1143445030, now seen corresponding path program 1 times [2024-11-23 22:39:32,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:39:32,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326415063] [2024-11-23 22:39:32,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:39:32,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:39:32,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:39:32,749 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:39:32,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2024-11-23 22:39:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:39:33,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 22:39:33,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:39:33,281 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:39:33,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 41 [2024-11-23 22:39:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:39:33,352 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:39:33,352 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:39:33,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326415063] [2024-11-23 22:39:33,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326415063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:39:33,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:39:33,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:39:33,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771990846] [2024-11-23 22:39:33,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:39:33,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:39:33,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:39:33,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:39:33,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:39:33,354 INFO L87 Difference]: Start difference. First operand 2368 states and 3143 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:39:34,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:39:34,945 INFO L93 Difference]: Finished difference Result 5536 states and 7393 transitions. [2024-11-23 22:39:34,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:39:34,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 118 [2024-11-23 22:39:34,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:39:34,950 INFO L225 Difference]: With dead ends: 5536 [2024-11-23 22:39:34,950 INFO L226 Difference]: Without dead ends: 3618 [2024-11-23 22:39:34,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:39:34,953 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 97 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:39:34,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 772 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 22:39:34,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3618 states. [2024-11-23 22:39:35,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3618 to 2512. [2024-11-23 22:39:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2512 states, 2379 states have (on average 1.3379571248423707) internal successors, (3183), 2392 states have internal predecessors, (3183), 88 states have call successors, (88), 44 states have call predecessors, (88), 44 states have return successors, (88), 75 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-23 22:39:35,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2512 states to 2512 states and 3359 transitions. [2024-11-23 22:39:35,243 INFO L78 Accepts]: Start accepts. Automaton has 2512 states and 3359 transitions. Word has length 118 [2024-11-23 22:39:35,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:39:35,244 INFO L471 AbstractCegarLoop]: Abstraction has 2512 states and 3359 transitions. [2024-11-23 22:39:35,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:39:35,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2512 states and 3359 transitions. [2024-11-23 22:39:35,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-23 22:39:35,245 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:39:35,245 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:39:35,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Ended with exit code 0 [2024-11-23 22:39:35,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:39:35,446 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:39:35,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:39:35,447 INFO L85 PathProgramCache]: Analyzing trace with hash -661993304, now seen corresponding path program 1 times [2024-11-23 22:39:35,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:39:35,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408614172] [2024-11-23 22:39:35,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:39:35,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:39:35,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:39:35,449 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:39:35,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2024-11-23 22:39:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:39:35,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-23 22:39:35,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:39:35,848 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 8 treesize of output 1 [2024-11-23 22:39:35,956 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 31 treesize of output 15 [2024-11-23 22:39:36,048 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 27 treesize of output 26 [2024-11-23 22:39:36,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:39:36,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 15 [2024-11-23 22:39:36,265 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 123 proven. 9 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-23 22:39:36,265 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:39:36,521 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:39:36,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408614172] [2024-11-23 22:39:36,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408614172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:39:36,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1096241907] [2024-11-23 22:39:36,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:39:36,522 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 22:39:36,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 22:39:36,524 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 22:39:36,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2024-11-23 22:39:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:39:37,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 22:39:37,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:39:37,770 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 12 treesize of output 8 [2024-11-23 22:39:38,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-23 22:39:38,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2024-11-23 22:39:38,746 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:39:38,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2024-11-23 22:39:38,813 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 131 proven. 9 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-23 22:39:38,813 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:39:38,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1096241907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:39:38,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:39:38,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2024-11-23 22:39:38,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975305209] [2024-11-23 22:39:38,913 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 22:39:38,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 22:39:38,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:39:38,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 22:39:38,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:39:38,914 INFO L87 Difference]: Start difference. First operand 2512 states and 3359 transitions. Second operand has 16 states, 14 states have (on average 7.642857142857143) internal successors, (107), 15 states have internal predecessors, (107), 6 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-23 22:39:43,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:39:43,208 INFO L93 Difference]: Finished difference Result 4822 states and 6359 transitions. [2024-11-23 22:39:43,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-23 22:39:43,209 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 7.642857142857143) internal successors, (107), 15 states have internal predecessors, (107), 6 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) Word has length 118 [2024-11-23 22:39:43,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:39:43,212 INFO L225 Difference]: With dead ends: 4822 [2024-11-23 22:39:43,212 INFO L226 Difference]: Without dead ends: 2792 [2024-11-23 22:39:43,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 290 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2024-11-23 22:39:43,214 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 738 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:39:43,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 486 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-23 22:39:43,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2024-11-23 22:39:43,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2451. [2024-11-23 22:39:43,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2451 states, 2318 states have (on average 1.3157894736842106) internal successors, (3050), 2331 states have internal predecessors, (3050), 88 states have call successors, (88), 44 states have call predecessors, (88), 44 states have return successors, (88), 75 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-23 22:39:43,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 3226 transitions. [2024-11-23 22:39:43,503 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 3226 transitions. Word has length 118 [2024-11-23 22:39:43,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:39:43,503 INFO L471 AbstractCegarLoop]: Abstraction has 2451 states and 3226 transitions. [2024-11-23 22:39:43,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 7.642857142857143) internal successors, (107), 15 states have internal predecessors, (107), 6 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-23 22:39:43,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 3226 transitions. [2024-11-23 22:39:43,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-23 22:39:43,505 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:39:43,505 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:39:43,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (47)] Ended with exit code 0 [2024-11-23 22:39:43,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2024-11-23 22:39:43,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:39:43,905 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:39:43,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:39:43,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1228294232, now seen corresponding path program 1 times [2024-11-23 22:39:43,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:39:43,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953178898] [2024-11-23 22:39:43,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:39:43,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:39:43,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:39:43,908 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:39:43,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2024-11-23 22:39:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:39:44,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 22:39:44,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:39:44,322 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 36 treesize of output 29 [2024-11-23 22:39:44,393 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:39:44,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 18 [2024-11-23 22:39:44,494 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:39:44,495 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:39:44,495 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:39:44,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953178898] [2024-11-23 22:39:44,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953178898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:39:44,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:39:44,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:39:44,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772939641] [2024-11-23 22:39:44,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:39:44,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:39:44,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:39:44,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:39:44,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:39:44,496 INFO L87 Difference]: Start difference. First operand 2451 states and 3226 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:39:48,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:39:49,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:39:54,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:39:58,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:40:02,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:40:06,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:40:08,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:40:13,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:40:15,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:40:17,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:40:17,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:40:17,858 INFO L93 Difference]: Finished difference Result 4535 states and 5922 transitions. [2024-11-23 22:40:17,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:40:17,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 118 [2024-11-23 22:40:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:40:17,863 INFO L225 Difference]: With dead ends: 4535 [2024-11-23 22:40:17,863 INFO L226 Difference]: Without dead ends: 2626 [2024-11-23 22:40:17,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:40:17,865 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 100 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 5 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:40:17,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 731 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 348 Invalid, 5 Unknown, 0 Unchecked, 32.9s Time] [2024-11-23 22:40:17,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2024-11-23 22:40:18,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2329. [2024-11-23 22:40:18,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 2196 states have (on average 1.3041894353369763) internal successors, (2864), 2209 states have internal predecessors, (2864), 88 states have call successors, (88), 44 states have call predecessors, (88), 44 states have return successors, (88), 75 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-23 22:40:18,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 3040 transitions. [2024-11-23 22:40:18,172 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 3040 transitions. Word has length 118 [2024-11-23 22:40:18,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:40:18,173 INFO L471 AbstractCegarLoop]: Abstraction has 2329 states and 3040 transitions. [2024-11-23 22:40:18,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:40:18,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 3040 transitions. [2024-11-23 22:40:18,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-23 22:40:18,175 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:40:18,175 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:40:18,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Ended with exit code 0 [2024-11-23 22:40:18,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:40:18,375 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:40:18,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:40:18,376 INFO L85 PathProgramCache]: Analyzing trace with hash -616076558, now seen corresponding path program 1 times [2024-11-23 22:40:18,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:40:18,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581433301] [2024-11-23 22:40:18,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:18,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:40:18,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:40:18,378 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:40:18,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2024-11-23 22:40:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:18,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-23 22:40:18,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:40:18,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 22:40:19,181 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 68 treesize of output 32 [2024-11-23 22:40:20,037 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 113 treesize of output 65 [2024-11-23 22:40:20,449 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:40:20,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 58 [2024-11-23 22:40:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-23 22:40:20,880 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:40:21,918 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:40:21,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581433301] [2024-11-23 22:40:21,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581433301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:40:21,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1719208285] [2024-11-23 22:40:21,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:21,918 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 22:40:21,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 22:40:21,920 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 22:40:21,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2024-11-23 22:40:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:23,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-23 22:40:23,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:40:23,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 22:40:24,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2024-11-23 22:40:28,259 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:40:28,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 81 [2024-11-23 22:40:29,470 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:40:29,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 190 treesize of output 82 [2024-11-23 22:40:29,863 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 108 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-23 22:40:29,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:40:31,480 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:40:31,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1719208285] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 22:40:31,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:40:31,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15, 20] total 38 [2024-11-23 22:40:31,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040047927] [2024-11-23 22:40:31,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:40:31,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:40:31,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:40:31,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:40:31,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1557, Unknown=0, NotChecked=0, Total=1722 [2024-11-23 22:40:31,483 INFO L87 Difference]: Start difference. First operand 2329 states and 3040 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:40:36,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:40:36,568 INFO L93 Difference]: Finished difference Result 3120 states and 3994 transitions. [2024-11-23 22:40:36,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:40:36,569 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 118 [2024-11-23 22:40:36,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:40:36,572 INFO L225 Difference]: With dead ends: 3120 [2024-11-23 22:40:36,573 INFO L226 Difference]: Without dead ends: 3118 [2024-11-23 22:40:36,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=197, Invalid=2155, Unknown=0, NotChecked=0, Total=2352 [2024-11-23 22:40:36,574 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 47 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:40:36,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1323 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-23 22:40:36,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3118 states. [2024-11-23 22:40:36,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3118 to 2718. [2024-11-23 22:40:36,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2718 states, 2576 states have (on average 1.2884316770186335) internal successors, (3319), 2592 states have internal predecessors, (3319), 94 states have call successors, (94), 47 states have call predecessors, (94), 47 states have return successors, (94), 78 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-23 22:40:36,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 3507 transitions. [2024-11-23 22:40:36,903 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 3507 transitions. Word has length 118 [2024-11-23 22:40:36,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:40:36,903 INFO L471 AbstractCegarLoop]: Abstraction has 2718 states and 3507 transitions. [2024-11-23 22:40:36,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:40:36,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 3507 transitions. [2024-11-23 22:40:36,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-23 22:40:36,905 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:40:36,905 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:40:36,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Ended with exit code 0 [2024-11-23 22:40:37,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (50)] Ended with exit code 0 [2024-11-23 22:40:37,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-23 22:40:37,305 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:40:37,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:40:37,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1425423184, now seen corresponding path program 1 times [2024-11-23 22:40:37,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:40:37,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017028486] [2024-11-23 22:40:37,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:37,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:40:37,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:40:37,308 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:40:37,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2024-11-23 22:40:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:37,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 22:40:37,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:40:37,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 22:40:38,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 20 [2024-11-23 22:40:40,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:40:40,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 56 [2024-11-23 22:40:40,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:40:40,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 58 [2024-11-23 22:40:40,500 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 108 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-23 22:40:40,500 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:40:41,092 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:40:41,092 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:40:41,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017028486] [2024-11-23 22:40:41,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017028486] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 22:40:41,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:40:41,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2024-11-23 22:40:41,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981336049] [2024-11-23 22:40:41,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:40:41,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:40:41,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:40:41,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:40:41,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-23 22:40:41,093 INFO L87 Difference]: Start difference. First operand 2718 states and 3507 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:40:41,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:40:41,880 INFO L93 Difference]: Finished difference Result 4800 states and 6211 transitions. [2024-11-23 22:40:41,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:40:41,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 118 [2024-11-23 22:40:41,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:40:41,884 INFO L225 Difference]: With dead ends: 4800 [2024-11-23 22:40:41,884 INFO L226 Difference]: Without dead ends: 2714 [2024-11-23 22:40:41,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:40:41,886 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 80 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:40:41,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 474 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 22:40:41,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2714 states. [2024-11-23 22:40:42,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2714 to 2709. [2024-11-23 22:40:42,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2709 states, 2567 states have (on average 1.28827425009739) internal successors, (3307), 2583 states have internal predecessors, (3307), 94 states have call successors, (94), 47 states have call predecessors, (94), 47 states have return successors, (94), 78 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-23 22:40:42,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2709 states to 2709 states and 3495 transitions. [2024-11-23 22:40:42,189 INFO L78 Accepts]: Start accepts. Automaton has 2709 states and 3495 transitions. Word has length 118 [2024-11-23 22:40:42,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:40:42,189 INFO L471 AbstractCegarLoop]: Abstraction has 2709 states and 3495 transitions. [2024-11-23 22:40:42,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:40:42,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2709 states and 3495 transitions. [2024-11-23 22:40:42,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-23 22:40:42,190 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:40:42,190 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:40:42,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Ended with exit code 0 [2024-11-23 22:40:42,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:40:42,391 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:40:42,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:40:42,391 INFO L85 PathProgramCache]: Analyzing trace with hash -750090064, now seen corresponding path program 1 times [2024-11-23 22:40:42,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:40:42,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814597264] [2024-11-23 22:40:42,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:42,392 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:40:42,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:40:42,393 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:40:42,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2024-11-23 22:40:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:42,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-23 22:40:42,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:40:43,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 22:40:43,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 32 [2024-11-23 22:40:45,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:40:45,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 57 [2024-11-23 22:40:46,185 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:40:46,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 149 treesize of output 59 [2024-11-23 22:40:46,333 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 108 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-23 22:40:46,333 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:40:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:40:46,907 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:40:46,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814597264] [2024-11-23 22:40:46,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814597264] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 22:40:46,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:40:46,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2024-11-23 22:40:46,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629150398] [2024-11-23 22:40:46,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:40:46,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:40:46,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:40:46,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:40:46,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:40:46,909 INFO L87 Difference]: Start difference. First operand 2709 states and 3495 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:40:47,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:40:47,619 INFO L93 Difference]: Finished difference Result 4819 states and 6217 transitions. [2024-11-23 22:40:47,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:40:47,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 118 [2024-11-23 22:40:47,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:40:47,623 INFO L225 Difference]: With dead ends: 4819 [2024-11-23 22:40:47,624 INFO L226 Difference]: Without dead ends: 2742 [2024-11-23 22:40:47,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-23 22:40:47,626 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 44 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:40:47,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 576 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 22:40:47,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2024-11-23 22:40:47,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 1733. [2024-11-23 22:40:47,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1662 states have (on average 1.2761732851985559) internal successors, (2121), 1668 states have internal predecessors, (2121), 44 states have call successors, (44), 26 states have call predecessors, (44), 26 states have return successors, (44), 38 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-23 22:40:47,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2209 transitions. [2024-11-23 22:40:47,845 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2209 transitions. Word has length 118 [2024-11-23 22:40:47,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:40:47,845 INFO L471 AbstractCegarLoop]: Abstraction has 1733 states and 2209 transitions. [2024-11-23 22:40:47,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:40:47,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2209 transitions. [2024-11-23 22:40:47,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-23 22:40:47,846 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:40:47,846 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:40:47,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2024-11-23 22:40:48,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:40:48,047 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:40:48,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:40:48,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1559436690, now seen corresponding path program 1 times [2024-11-23 22:40:48,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:40:48,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86426111] [2024-11-23 22:40:48,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:48,048 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:40:48,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:40:48,049 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:40:48,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2024-11-23 22:40:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:48,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-23 22:40:48,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:40:48,628 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 8 treesize of output 1 [2024-11-23 22:40:49,771 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 131 treesize of output 67 [2024-11-23 22:40:50,241 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:40:50,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 58 [2024-11-23 22:40:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-23 22:40:50,684 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:40:51,882 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:40:51,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86426111] [2024-11-23 22:40:51,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86426111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:40:51,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1676846350] [2024-11-23 22:40:51,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:51,882 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 22:40:51,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 22:40:51,884 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 22:40:51,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (54)] Waiting until timeout for monitored process [2024-11-23 22:40:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:53,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-23 22:40:53,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:40:53,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 22:40:54,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2024-11-23 22:40:58,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:40:58,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 90 [2024-11-23 22:40:59,266 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:40:59,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 218 treesize of output 98 [2024-11-23 22:40:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 108 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-23 22:40:59,447 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:41:00,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1676846350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:41:00,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:41:00,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19] total 27 [2024-11-23 22:41:00,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826974923] [2024-11-23 22:41:00,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 22:41:00,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-23 22:41:00,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:41:00,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-23 22:41:00,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1410, Unknown=0, NotChecked=0, Total=1560 [2024-11-23 22:41:00,822 INFO L87 Difference]: Start difference. First operand 1733 states and 2209 transitions. Second operand has 28 states, 28 states have (on average 4.428571428571429) internal successors, (124), 27 states have internal predecessors, (124), 5 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2024-11-23 22:41:13,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:41:13,736 INFO L93 Difference]: Finished difference Result 6753 states and 8582 transitions. [2024-11-23 22:41:13,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-23 22:41:13,737 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.428571428571429) internal successors, (124), 27 states have internal predecessors, (124), 5 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) Word has length 118 [2024-11-23 22:41:13,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:41:13,742 INFO L225 Difference]: With dead ends: 6753 [2024-11-23 22:41:13,742 INFO L226 Difference]: Without dead ends: 6751 [2024-11-23 22:41:13,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 268 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1249 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=611, Invalid=5089, Unknown=0, NotChecked=0, Total=5700 [2024-11-23 22:41:13,745 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 764 mSDsluCounter, 3219 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:41:13,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 3404 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-23 22:41:13,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6751 states. [2024-11-23 22:41:14,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6751 to 3466. [2024-11-23 22:41:14,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3466 states, 3324 states have (on average 1.272864019253911) internal successors, (4231), 3341 states have internal predecessors, (4231), 89 states have call successors, (89), 52 states have call predecessors, (89), 52 states have return successors, (89), 72 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-23 22:41:14,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 4409 transitions. [2024-11-23 22:41:14,419 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 4409 transitions. Word has length 118 [2024-11-23 22:41:14,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:41:14,420 INFO L471 AbstractCegarLoop]: Abstraction has 3466 states and 4409 transitions. [2024-11-23 22:41:14,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.428571428571429) internal successors, (124), 27 states have internal predecessors, (124), 5 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2024-11-23 22:41:14,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 4409 transitions. [2024-11-23 22:41:14,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-23 22:41:14,422 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:41:14,423 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:41:14,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2024-11-23 22:41:14,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (54)] Ended with exit code 0 [2024-11-23 22:41:14,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-23 22:41:14,823 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:41:14,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:41:14,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1587936980, now seen corresponding path program 1 times [2024-11-23 22:41:14,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:41:14,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361867708] [2024-11-23 22:41:14,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:41:14,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:41:14,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:41:14,827 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:41:14,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2024-11-23 22:41:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:41:15,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:41:15,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:41:15,225 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-23 22:41:15,225 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:41:15,225 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:41:15,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361867708] [2024-11-23 22:41:15,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361867708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:41:15,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:41:15,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:41:15,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952122166] [2024-11-23 22:41:15,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:41:15,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:41:15,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:41:15,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:41:15,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:41:15,227 INFO L87 Difference]: Start difference. First operand 3466 states and 4409 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:41:15,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:41:15,673 INFO L93 Difference]: Finished difference Result 6543 states and 8340 transitions. [2024-11-23 22:41:15,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:41:15,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2024-11-23 22:41:15,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:41:15,678 INFO L225 Difference]: With dead ends: 6543 [2024-11-23 22:41:15,678 INFO L226 Difference]: Without dead ends: 3466 [2024-11-23 22:41:15,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:41:15,681 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 0 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:41:15,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 403 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:41:15,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3466 states. [2024-11-23 22:41:16,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3466 to 3466. [2024-11-23 22:41:16,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3466 states, 3324 states have (on average 1.2704572803850782) internal successors, (4223), 3341 states have internal predecessors, (4223), 89 states have call successors, (89), 52 states have call predecessors, (89), 52 states have return successors, (89), 72 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-23 22:41:16,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 4401 transitions. [2024-11-23 22:41:16,093 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 4401 transitions. Word has length 118 [2024-11-23 22:41:16,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:41:16,093 INFO L471 AbstractCegarLoop]: Abstraction has 3466 states and 4401 transitions. [2024-11-23 22:41:16,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:41:16,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 4401 transitions. [2024-11-23 22:41:16,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-23 22:41:16,095 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:41:16,095 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:41:16,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Ended with exit code 0 [2024-11-23 22:41:16,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:41:16,295 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:41:16,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:41:16,296 INFO L85 PathProgramCache]: Analyzing trace with hash -615002453, now seen corresponding path program 1 times [2024-11-23 22:41:16,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:41:16,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035624664] [2024-11-23 22:41:16,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:41:16,296 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:41:16,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:41:16,298 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:41:16,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2024-11-23 22:41:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:41:16,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 22:41:16,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:41:17,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:41:17,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 112 treesize of output 52 [2024-11-23 22:41:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:41:17,273 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:41:17,273 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:41:17,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035624664] [2024-11-23 22:41:17,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035624664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:41:17,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:41:17,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:41:17,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838266176] [2024-11-23 22:41:17,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:41:17,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:41:17,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:41:17,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:41:17,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:41:17,275 INFO L87 Difference]: Start difference. First operand 3466 states and 4401 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:41:20,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:41:20,907 INFO L93 Difference]: Finished difference Result 7751 states and 9820 transitions. [2024-11-23 22:41:20,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:41:20,907 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 119 [2024-11-23 22:41:20,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:41:20,913 INFO L225 Difference]: With dead ends: 7751 [2024-11-23 22:41:20,913 INFO L226 Difference]: Without dead ends: 5028 [2024-11-23 22:41:20,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:41:20,916 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 154 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:41:20,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1301 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-23 22:41:20,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2024-11-23 22:41:21,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 3790. [2024-11-23 22:41:21,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3790 states, 3648 states have (on average 1.2672697368421053) internal successors, (4623), 3665 states have internal predecessors, (4623), 89 states have call successors, (89), 52 states have call predecessors, (89), 52 states have return successors, (89), 72 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-23 22:41:21,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3790 states to 3790 states and 4801 transitions. [2024-11-23 22:41:21,501 INFO L78 Accepts]: Start accepts. Automaton has 3790 states and 4801 transitions. Word has length 119 [2024-11-23 22:41:21,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:41:21,502 INFO L471 AbstractCegarLoop]: Abstraction has 3790 states and 4801 transitions. [2024-11-23 22:41:21,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:41:21,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3790 states and 4801 transitions. [2024-11-23 22:41:21,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-23 22:41:21,504 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:41:21,505 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:41:21,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Ended with exit code 0 [2024-11-23 22:41:21,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:41:21,705 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:41:21,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:41:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1008029463, now seen corresponding path program 1 times [2024-11-23 22:41:21,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:41:21,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643167281] [2024-11-23 22:41:21,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:41:21,706 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:41:21,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:41:21,708 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:41:21,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2024-11-23 22:41:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:41:22,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-23 22:41:22,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:41:22,136 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 19 treesize of output 1 [2024-11-23 22:41:22,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-23 22:41:22,551 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:41:22,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2024-11-23 22:41:22,939 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:41:22,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 53 [2024-11-23 22:41:23,179 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:41:23,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 56 [2024-11-23 22:41:23,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:41:23,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 31 [2024-11-23 22:41:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 151 proven. 18 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-23 22:41:23,958 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:41:24,586 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:41:24,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643167281] [2024-11-23 22:41:24,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643167281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:41:24,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1832497553] [2024-11-23 22:41:24,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:41:24,586 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 22:41:24,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 22:41:24,588 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 22:41:24,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (58)] Waiting until timeout for monitored process [2024-11-23 22:41:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:41:25,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 22:41:25,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:41:25,965 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 12 treesize of output 8 [2024-11-23 22:41:26,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2024-11-23 22:41:27,112 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:41:27,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 37 [2024-11-23 22:41:27,410 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:41:27,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 35 [2024-11-23 22:41:27,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:41:27,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 18 [2024-11-23 22:41:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 139 proven. 9 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-23 22:41:27,967 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:41:28,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1832497553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:41:28,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:41:28,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 26 [2024-11-23 22:41:28,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941047503] [2024-11-23 22:41:28,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 22:41:28,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-23 22:41:28,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:41:28,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-23 22:41:28,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2024-11-23 22:41:28,141 INFO L87 Difference]: Start difference. First operand 3790 states and 4801 transitions. Second operand has 26 states, 23 states have (on average 5.826086956521739) internal successors, (134), 24 states have internal predecessors, (134), 9 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (24), 7 states have call predecessors, (24), 9 states have call successors, (24) [2024-11-23 22:41:37,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:41:37,247 INFO L93 Difference]: Finished difference Result 7519 states and 9523 transitions. [2024-11-23 22:41:37,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-23 22:41:37,247 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 5.826086956521739) internal successors, (134), 24 states have internal predecessors, (134), 9 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (24), 7 states have call predecessors, (24), 9 states have call successors, (24) Word has length 119 [2024-11-23 22:41:37,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:41:37,251 INFO L225 Difference]: With dead ends: 7519 [2024-11-23 22:41:37,251 INFO L226 Difference]: Without dead ends: 4472 [2024-11-23 22:41:37,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=839, Invalid=3717, Unknown=0, NotChecked=0, Total=4556 [2024-11-23 22:41:37,254 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 682 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:41:37,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 1160 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-23 22:41:37,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2024-11-23 22:41:37,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 3698. [2024-11-23 22:41:37,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3698 states, 3556 states have (on average 1.2629358830146231) internal successors, (4491), 3573 states have internal predecessors, (4491), 89 states have call successors, (89), 52 states have call predecessors, (89), 52 states have return successors, (89), 72 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-23 22:41:37,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 4669 transitions. [2024-11-23 22:41:37,681 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 4669 transitions. Word has length 119 [2024-11-23 22:41:37,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:41:37,681 INFO L471 AbstractCegarLoop]: Abstraction has 3698 states and 4669 transitions. [2024-11-23 22:41:37,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 5.826086956521739) internal successors, (134), 24 states have internal predecessors, (134), 9 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (24), 7 states have call predecessors, (24), 9 states have call successors, (24) [2024-11-23 22:41:37,681 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 4669 transitions. [2024-11-23 22:41:37,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-23 22:41:37,683 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:41:37,683 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:41:37,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Ended with exit code 0 [2024-11-23 22:41:37,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (58)] Ended with exit code 0 [2024-11-23 22:41:38,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-23 22:41:38,083 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:41:38,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:41:38,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1626119703, now seen corresponding path program 1 times [2024-11-23 22:41:38,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:41:38,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577829173] [2024-11-23 22:41:38,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:41:38,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:41:38,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:41:38,086 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:41:38,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2024-11-23 22:41:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:41:38,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 22:41:38,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:41:38,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:41:38,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 20 [2024-11-23 22:41:38,898 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:41:38,898 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:41:38,898 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:41:38,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577829173] [2024-11-23 22:41:38,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577829173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:41:38,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:41:38,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 22:41:38,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472562091] [2024-11-23 22:41:38,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:41:38,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:41:38,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:41:38,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:41:38,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:41:38,900 INFO L87 Difference]: Start difference. First operand 3698 states and 4669 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:41:43,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:41:46,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:41:50,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:41:51,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:41:51,392 INFO L93 Difference]: Finished difference Result 7266 states and 9121 transitions. [2024-11-23 22:41:51,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:41:51,393 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 119 [2024-11-23 22:41:51,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:41:51,397 INFO L225 Difference]: With dead ends: 7266 [2024-11-23 22:41:51,397 INFO L226 Difference]: Without dead ends: 4311 [2024-11-23 22:41:51,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:41:51,398 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 73 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:41:51,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 847 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 443 Invalid, 2 Unknown, 0 Unchecked, 11.8s Time] [2024-11-23 22:41:51,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2024-11-23 22:41:51,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 3942. [2024-11-23 22:41:51,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3800 states have (on average 1.2523684210526316) internal successors, (4759), 3817 states have internal predecessors, (4759), 89 states have call successors, (89), 52 states have call predecessors, (89), 52 states have return successors, (89), 72 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-23 22:41:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 4937 transitions. [2024-11-23 22:41:51,849 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 4937 transitions. Word has length 119 [2024-11-23 22:41:51,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:41:51,849 INFO L471 AbstractCegarLoop]: Abstraction has 3942 states and 4937 transitions. [2024-11-23 22:41:51,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:41:51,849 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 4937 transitions. [2024-11-23 22:41:51,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-23 22:41:51,851 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:41:51,851 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:41:51,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Ended with exit code 0 [2024-11-23 22:41:52,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:41:52,052 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:41:52,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:41:52,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1997460130, now seen corresponding path program 1 times [2024-11-23 22:41:52,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:41:52,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891385716] [2024-11-23 22:41:52,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:41:52,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:41:52,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:41:52,055 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:41:52,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2024-11-23 22:41:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:41:52,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 22:41:52,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:41:52,745 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:41:52,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 64 [2024-11-23 22:41:52,894 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:41:52,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 35 [2024-11-23 22:41:52,988 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:41:52,988 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:41:52,989 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:41:52,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891385716] [2024-11-23 22:41:52,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891385716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:41:52,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:41:52,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:41:52,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799476034] [2024-11-23 22:41:52,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:41:52,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:41:52,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:41:52,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:41:52,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:41:52,990 INFO L87 Difference]: Start difference. First operand 3942 states and 4937 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:41:57,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:42:02,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:42:05,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:42:07,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:42:10,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:42:14,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:42:18,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:42:22,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:42:24,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:42:28,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:42:29,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:29,033 INFO L93 Difference]: Finished difference Result 7464 states and 9305 transitions. [2024-11-23 22:42:29,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:42:29,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 119 [2024-11-23 22:42:29,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:29,039 INFO L225 Difference]: With dead ends: 7464 [2024-11-23 22:42:29,040 INFO L226 Difference]: Without dead ends: 4149 [2024-11-23 22:42:29,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:42:29,043 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 88 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:29,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 885 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 375 Invalid, 5 Unknown, 0 Unchecked, 35.2s Time] [2024-11-23 22:42:29,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4149 states. [2024-11-23 22:42:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4149 to 3734. [2024-11-23 22:42:29,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 3592 states have (on average 1.2469376391982183) internal successors, (4479), 3609 states have internal predecessors, (4479), 89 states have call successors, (89), 52 states have call predecessors, (89), 52 states have return successors, (89), 72 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-23 22:42:29,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 4657 transitions. [2024-11-23 22:42:29,484 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 4657 transitions. Word has length 119 [2024-11-23 22:42:29,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:29,485 INFO L471 AbstractCegarLoop]: Abstraction has 3734 states and 4657 transitions. [2024-11-23 22:42:29,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:42:29,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 4657 transitions. [2024-11-23 22:42:29,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-23 22:42:29,486 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:29,487 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:29,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2024-11-23 22:42:29,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:42:29,687 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:29,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:29,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1518826049, now seen corresponding path program 1 times [2024-11-23 22:42:29,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:42:29,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777082323] [2024-11-23 22:42:29,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:29,688 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:42:29,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:42:29,690 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:42:29,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2024-11-23 22:42:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:30,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-23 22:42:30,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:42:30,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:42:30,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 108 treesize of output 48 [2024-11-23 22:42:30,952 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:42:30,953 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:42:30,953 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:42:30,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777082323] [2024-11-23 22:42:30,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777082323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:30,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:42:30,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 22:42:30,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432498148] [2024-11-23 22:42:30,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:30,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:42:30,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:42:30,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:42:30,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:42:30,954 INFO L87 Difference]: Start difference. First operand 3734 states and 4657 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:42:34,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:34,817 INFO L93 Difference]: Finished difference Result 7168 states and 8919 transitions. [2024-11-23 22:42:34,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:42:34,818 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 120 [2024-11-23 22:42:34,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:34,822 INFO L225 Difference]: With dead ends: 7168 [2024-11-23 22:42:34,822 INFO L226 Difference]: Without dead ends: 4109 [2024-11-23 22:42:34,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:42:34,824 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 60 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:34,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1020 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-23 22:42:34,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2024-11-23 22:42:35,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 3650. [2024-11-23 22:42:35,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3508 states have (on average 1.2460091220068414) internal successors, (4371), 3525 states have internal predecessors, (4371), 89 states have call successors, (89), 52 states have call predecessors, (89), 52 states have return successors, (89), 72 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-23 22:42:35,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 4549 transitions. [2024-11-23 22:42:35,358 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 4549 transitions. Word has length 120 [2024-11-23 22:42:35,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:35,358 INFO L471 AbstractCegarLoop]: Abstraction has 3650 states and 4549 transitions. [2024-11-23 22:42:35,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:42:35,358 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 4549 transitions. [2024-11-23 22:42:35,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-23 22:42:35,359 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:35,359 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:35,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Ended with exit code 0 [2024-11-23 22:42:35,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:42:35,560 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:35,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:35,560 INFO L85 PathProgramCache]: Analyzing trace with hash 698400616, now seen corresponding path program 1 times [2024-11-23 22:42:35,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:42:35,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159531209] [2024-11-23 22:42:35,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:35,561 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:42:35,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:42:35,563 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:42:35,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2024-11-23 22:42:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:36,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-23 22:42:36,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:42:36,154 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 19 treesize of output 1 [2024-11-23 22:42:37,547 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 129 treesize of output 65 [2024-11-23 22:42:38,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:42:38,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 56 [2024-11-23 22:42:38,594 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 132 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-23 22:42:38,594 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:42:39,791 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:42:39,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159531209] [2024-11-23 22:42:39,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159531209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:42:39,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2135596467] [2024-11-23 22:42:39,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:39,792 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 22:42:39,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 22:42:39,795 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 22:42:39,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2024-11-23 22:42:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:41,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-23 22:42:41,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:42:42,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 22:42:44,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 57 [2024-11-23 22:42:45,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:42:45,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 56 [2024-11-23 22:42:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 132 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-23 22:42:45,438 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:42:45,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2135596467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:42:45,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:42:45,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 29 [2024-11-23 22:42:45,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438381055] [2024-11-23 22:42:45,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 22:42:45,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-23 22:42:45,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:42:45,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-23 22:42:45,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1323, Unknown=0, NotChecked=0, Total=1482 [2024-11-23 22:42:45,855 INFO L87 Difference]: Start difference. First operand 3650 states and 4549 transitions. Second operand has 30 states, 28 states have (on average 4.678571428571429) internal successors, (131), 27 states have internal predecessors, (131), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-23 22:42:52,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:52,987 INFO L93 Difference]: Finished difference Result 5582 states and 6917 transitions. [2024-11-23 22:42:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-23 22:42:52,988 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 4.678571428571429) internal successors, (131), 27 states have internal predecessors, (131), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) Word has length 120 [2024-11-23 22:42:52,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:52,993 INFO L225 Difference]: With dead ends: 5582 [2024-11-23 22:42:52,993 INFO L226 Difference]: Without dead ends: 5580 [2024-11-23 22:42:52,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 271 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=492, Invalid=3168, Unknown=0, NotChecked=0, Total=3660 [2024-11-23 22:42:52,995 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 731 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:52,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 2640 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-23 22:42:52,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5580 states. [2024-11-23 22:42:53,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5580 to 4954. [2024-11-23 22:42:53,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4954 states, 4776 states have (on average 1.2518844221105527) internal successors, (5979), 4794 states have internal predecessors, (5979), 111 states have call successors, (111), 66 states have call predecessors, (111), 66 states have return successors, (111), 93 states have call predecessors, (111), 111 states have call successors, (111) [2024-11-23 22:42:53,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4954 states to 4954 states and 6201 transitions. [2024-11-23 22:42:53,573 INFO L78 Accepts]: Start accepts. Automaton has 4954 states and 6201 transitions. Word has length 120 [2024-11-23 22:42:53,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:53,573 INFO L471 AbstractCegarLoop]: Abstraction has 4954 states and 6201 transitions. [2024-11-23 22:42:53,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 4.678571428571429) internal successors, (131), 27 states have internal predecessors, (131), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-23 22:42:53,573 INFO L276 IsEmpty]: Start isEmpty. Operand 4954 states and 6201 transitions. [2024-11-23 22:42:53,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-23 22:42:53,575 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:53,575 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:53,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (63)] Forceful destruction successful, exit code 0 [2024-11-23 22:42:53,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2024-11-23 22:42:53,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:42:53,976 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:53,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:53,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1242181398, now seen corresponding path program 1 times [2024-11-23 22:42:53,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:42:53,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729419122] [2024-11-23 22:42:53,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:53,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:42:53,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:42:53,980 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:42:53,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2024-11-23 22:42:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:54,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 22:42:54,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:42:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-23 22:42:54,448 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:42:54,448 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:42:54,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729419122] [2024-11-23 22:42:54,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729419122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:54,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:42:54,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:42:54,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168206962] [2024-11-23 22:42:54,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:54,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:42:54,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:42:54,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:42:54,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:42:54,450 INFO L87 Difference]: Start difference. First operand 4954 states and 6201 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:42:55,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:55,188 INFO L93 Difference]: Finished difference Result 7645 states and 9570 transitions. [2024-11-23 22:42:55,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:42:55,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 120 [2024-11-23 22:42:55,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:55,193 INFO L225 Difference]: With dead ends: 7645 [2024-11-23 22:42:55,193 INFO L226 Difference]: Without dead ends: 3268 [2024-11-23 22:42:55,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:42:55,196 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 1 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:55,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 589 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:42:55,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2024-11-23 22:42:55,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 3210. [2024-11-23 22:42:55,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3210 states, 3088 states have (on average 1.2525906735751295) internal successors, (3868), 3098 states have internal predecessors, (3868), 75 states have call successors, (75), 46 states have call predecessors, (75), 46 states have return successors, (75), 65 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-23 22:42:55,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 4018 transitions. [2024-11-23 22:42:55,588 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 4018 transitions. Word has length 120 [2024-11-23 22:42:55,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:55,588 INFO L471 AbstractCegarLoop]: Abstraction has 3210 states and 4018 transitions. [2024-11-23 22:42:55,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:42:55,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 4018 transitions. [2024-11-23 22:42:55,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-23 22:42:55,591 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:55,591 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:55,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Ended with exit code 0 [2024-11-23 22:42:55,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:42:55,791 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:55,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:55,792 INFO L85 PathProgramCache]: Analyzing trace with hash 980460109, now seen corresponding path program 1 times [2024-11-23 22:42:55,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:42:55,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981921758] [2024-11-23 22:42:55,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:55,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:42:55,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:42:55,797 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:42:55,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2024-11-23 22:42:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:56,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 22:42:56,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:42:56,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 22:42:56,776 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 68 treesize of output 32 [2024-11-23 22:42:57,673 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 113 treesize of output 65 [2024-11-23 22:42:58,118 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:42:58,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 194 treesize of output 80 [2024-11-23 22:42:58,388 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-23 22:42:58,388 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:42:59,200 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:42:59,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981921758] [2024-11-23 22:42:59,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981921758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:42:59,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1098200152] [2024-11-23 22:42:59,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:59,200 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 22:42:59,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 22:42:59,206 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 22:42:59,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (66)] Waiting until timeout for monitored process [2024-11-23 22:43:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:43:00,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-23 22:43:00,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:43:00,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 22:43:01,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2024-11-23 22:43:02,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 59 [2024-11-23 22:43:03,076 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:43:03,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 176 treesize of output 80 [2024-11-23 22:43:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-23 22:43:03,131 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:43:03,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1098200152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:43:03,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:43:03,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2024-11-23 22:43:03,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336682464] [2024-11-23 22:43:03,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 22:43:03,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 22:43:03,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:43:03,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 22:43:03,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2024-11-23 22:43:03,544 INFO L87 Difference]: Start difference. First operand 3210 states and 4018 transitions. Second operand has 19 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 18 states have internal predecessors, (128), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-23 22:43:07,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:43:07,541 INFO L93 Difference]: Finished difference Result 6440 states and 8042 transitions. [2024-11-23 22:43:07,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 22:43:07,541 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 18 states have internal predecessors, (128), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 121 [2024-11-23 22:43:07,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:43:07,548 INFO L225 Difference]: With dead ends: 6440 [2024-11-23 22:43:07,548 INFO L226 Difference]: Without dead ends: 6438 [2024-11-23 22:43:07,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=186, Invalid=1004, Unknown=0, NotChecked=0, Total=1190 [2024-11-23 22:43:07,549 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 711 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:43:07,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1520 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-23 22:43:07,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6438 states. [2024-11-23 22:43:08,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6438 to 4456. [2024-11-23 22:43:08,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 4274 states have (on average 1.2667290594291063) internal successors, (5414), 4283 states have internal predecessors, (5414), 111 states have call successors, (111), 70 states have call predecessors, (111), 70 states have return successors, (111), 102 states have call predecessors, (111), 111 states have call successors, (111) [2024-11-23 22:43:08,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 5636 transitions. [2024-11-23 22:43:08,064 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 5636 transitions. Word has length 121 [2024-11-23 22:43:08,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:43:08,064 INFO L471 AbstractCegarLoop]: Abstraction has 4456 states and 5636 transitions. [2024-11-23 22:43:08,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 18 states have internal predecessors, (128), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-23 22:43:08,064 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 5636 transitions. [2024-11-23 22:43:08,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-23 22:43:08,066 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:43:08,066 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:43:08,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Ended with exit code 0 [2024-11-23 22:43:08,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (66)] Ended with exit code 0 [2024-11-23 22:43:08,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-23 22:43:08,467 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:43:08,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:43:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash 210369608, now seen corresponding path program 1 times [2024-11-23 22:43:08,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:43:08,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033181407] [2024-11-23 22:43:08,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:43:08,468 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:43:08,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:43:08,469 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:43:08,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2024-11-23 22:43:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:43:09,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 22:43:09,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:43:09,020 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 8 treesize of output 1 [2024-11-23 22:43:09,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:43:09,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2024-11-23 22:43:09,267 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:43:09,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 16 [2024-11-23 22:43:09,319 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:43:09,319 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:43:09,319 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:43:09,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033181407] [2024-11-23 22:43:09,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033181407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:43:09,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:43:09,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:43:09,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263804582] [2024-11-23 22:43:09,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:43:09,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:43:09,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:43:09,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:43:09,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:43:09,321 INFO L87 Difference]: Start difference. First operand 4456 states and 5636 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:43:12,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:43:12,704 INFO L93 Difference]: Finished difference Result 10637 states and 13422 transitions. [2024-11-23 22:43:12,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:43:12,705 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 122 [2024-11-23 22:43:12,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:43:12,712 INFO L225 Difference]: With dead ends: 10637 [2024-11-23 22:43:12,713 INFO L226 Difference]: Without dead ends: 7085 [2024-11-23 22:43:12,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:43:12,715 INFO L435 NwaCegarLoop]: 287 mSDtfsCounter, 209 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:43:12,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 907 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 22:43:12,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7085 states. [2024-11-23 22:43:13,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7085 to 6245. [2024-11-23 22:43:13,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6245 states, 5949 states have (on average 1.2544965540426962) internal successors, (7463), 5967 states have internal predecessors, (7463), 182 states have call successors, (182), 113 states have call predecessors, (182), 113 states have return successors, (182), 164 states have call predecessors, (182), 182 states have call successors, (182) [2024-11-23 22:43:13,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6245 states to 6245 states and 7827 transitions. [2024-11-23 22:43:13,811 INFO L78 Accepts]: Start accepts. Automaton has 6245 states and 7827 transitions. Word has length 122 [2024-11-23 22:43:13,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:43:13,811 INFO L471 AbstractCegarLoop]: Abstraction has 6245 states and 7827 transitions. [2024-11-23 22:43:13,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:43:13,811 INFO L276 IsEmpty]: Start isEmpty. Operand 6245 states and 7827 transitions. [2024-11-23 22:43:13,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-23 22:43:13,815 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:43:13,815 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:43:13,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (67)] Ended with exit code 0 [2024-11-23 22:43:14,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:43:14,016 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:43:14,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:43:14,016 INFO L85 PathProgramCache]: Analyzing trace with hash 911434186, now seen corresponding path program 1 times [2024-11-23 22:43:14,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:43:14,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912054098] [2024-11-23 22:43:14,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:43:14,017 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:43:14,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:43:14,019 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:43:14,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2024-11-23 22:43:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:43:14,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-23 22:43:14,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:43:14,639 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 14 treesize of output 10 [2024-11-23 22:43:14,871 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 36 treesize of output 29 [2024-11-23 22:43:15,144 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:43:15,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 42 [2024-11-23 22:43:15,704 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:43:15,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 56 [2024-11-23 22:43:16,563 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:43:16,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 84 [2024-11-23 22:43:18,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:43:18,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 121 treesize of output 57 [2024-11-23 22:43:18,553 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 183 proven. 12 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-23 22:43:18,553 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:43:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:43:20,001 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:43:20,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912054098] [2024-11-23 22:43:20,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912054098] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 22:43:20,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:43:20,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18] total 25 [2024-11-23 22:43:20,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972971054] [2024-11-23 22:43:20,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:43:20,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:43:20,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:43:20,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:43:20,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2024-11-23 22:43:20,003 INFO L87 Difference]: Start difference. First operand 6245 states and 7827 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:43:24,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:43:24,999 INFO L93 Difference]: Finished difference Result 12370 states and 15458 transitions. [2024-11-23 22:43:25,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:43:25,000 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 122 [2024-11-23 22:43:25,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:43:25,008 INFO L225 Difference]: With dead ends: 12370 [2024-11-23 22:43:25,008 INFO L226 Difference]: Without dead ends: 7233 [2024-11-23 22:43:25,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 218 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2024-11-23 22:43:25,011 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 173 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:43:25,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 948 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-23 22:43:25,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7233 states. [2024-11-23 22:43:25,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7233 to 6245. [2024-11-23 22:43:25,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6245 states, 5949 states have (on average 1.2534879811733064) internal successors, (7457), 5967 states have internal predecessors, (7457), 182 states have call successors, (182), 113 states have call predecessors, (182), 113 states have return successors, (182), 164 states have call predecessors, (182), 182 states have call successors, (182) [2024-11-23 22:43:25,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6245 states to 6245 states and 7821 transitions. [2024-11-23 22:43:25,926 INFO L78 Accepts]: Start accepts. Automaton has 6245 states and 7821 transitions. Word has length 122 [2024-11-23 22:43:25,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:43:25,926 INFO L471 AbstractCegarLoop]: Abstraction has 6245 states and 7821 transitions. [2024-11-23 22:43:25,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:43:25,926 INFO L276 IsEmpty]: Start isEmpty. Operand 6245 states and 7821 transitions. [2024-11-23 22:43:25,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 22:43:25,930 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:43:25,930 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:43:25,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Ended with exit code 0 [2024-11-23 22:43:26,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:43:26,131 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:43:26,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:43:26,131 INFO L85 PathProgramCache]: Analyzing trace with hash 99806534, now seen corresponding path program 1 times [2024-11-23 22:43:26,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:43:26,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54329491] [2024-11-23 22:43:26,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:43:26,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:43:26,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:43:26,134 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:43:26,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2024-11-23 22:43:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:43:26,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 22:43:26,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:43:26,570 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 12 treesize of output 8 [2024-11-23 22:43:26,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:43:26,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 21 [2024-11-23 22:43:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:43:26,859 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:43:26,859 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:43:26,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54329491] [2024-11-23 22:43:26,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54329491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:43:26,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:43:26,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:43:26,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291883637] [2024-11-23 22:43:26,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:43:26,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:43:26,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:43:26,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:43:26,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:43:26,860 INFO L87 Difference]: Start difference. First operand 6245 states and 7821 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:43:30,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:43:30,728 INFO L93 Difference]: Finished difference Result 13642 states and 16975 transitions. [2024-11-23 22:43:30,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:43:30,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 123 [2024-11-23 22:43:30,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:43:30,738 INFO L225 Difference]: With dead ends: 13642 [2024-11-23 22:43:30,738 INFO L226 Difference]: Without dead ends: 8505 [2024-11-23 22:43:30,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:43:30,741 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 186 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:43:30,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 841 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-23 22:43:30,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8505 states. [2024-11-23 22:43:31,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8505 to 6387. [2024-11-23 22:43:31,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6387 states, 6091 states have (on average 1.2511902807420785) internal successors, (7621), 6109 states have internal predecessors, (7621), 182 states have call successors, (182), 113 states have call predecessors, (182), 113 states have return successors, (182), 164 states have call predecessors, (182), 182 states have call successors, (182) [2024-11-23 22:43:31,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6387 states to 6387 states and 7985 transitions. [2024-11-23 22:43:31,781 INFO L78 Accepts]: Start accepts. Automaton has 6387 states and 7985 transitions. Word has length 123 [2024-11-23 22:43:31,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:43:31,781 INFO L471 AbstractCegarLoop]: Abstraction has 6387 states and 7985 transitions. [2024-11-23 22:43:31,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:43:31,781 INFO L276 IsEmpty]: Start isEmpty. Operand 6387 states and 7985 transitions. [2024-11-23 22:43:31,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 22:43:31,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:43:31,784 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:43:31,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Ended with exit code 0 [2024-11-23 22:43:31,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:43:31,984 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:43:31,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:43:31,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1820787657, now seen corresponding path program 1 times [2024-11-23 22:43:31,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:43:31,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021518565] [2024-11-23 22:43:31,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:43:31,985 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:43:31,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:43:31,989 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:43:31,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2024-11-23 22:43:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:43:32,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 22:43:32,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:43:32,467 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 8 treesize of output 1 [2024-11-23 22:43:32,513 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 27 treesize of output 15 [2024-11-23 22:43:32,584 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 22 treesize of output 10 [2024-11-23 22:43:32,927 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:43:32,927 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:43:32,928 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:43:32,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021518565] [2024-11-23 22:43:32,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021518565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:43:32,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:43:32,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:43:32,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614377573] [2024-11-23 22:43:32,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:43:32,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:43:32,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:43:32,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:43:32,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:43:32,929 INFO L87 Difference]: Start difference. First operand 6387 states and 7985 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:43:37,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:43:39,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:43:41,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:43:45,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:43:47,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:43:54,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:43:56,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:43:56,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:43:56,725 INFO L93 Difference]: Finished difference Result 11962 states and 14917 transitions. [2024-11-23 22:43:56,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:43:56,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 123 [2024-11-23 22:43:56,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:43:56,733 INFO L225 Difference]: With dead ends: 11962 [2024-11-23 22:43:56,733 INFO L226 Difference]: Without dead ends: 6683 [2024-11-23 22:43:56,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:43:56,738 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 103 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:43:56,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 461 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 226 Invalid, 3 Unknown, 0 Unchecked, 21.2s Time] [2024-11-23 22:43:56,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6683 states. [2024-11-23 22:43:57,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6683 to 6547. [2024-11-23 22:43:57,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6547 states, 6180 states have (on average 1.241747572815534) internal successors, (7674), 6199 states have internal predecessors, (7674), 225 states have call successors, (225), 141 states have call predecessors, (225), 141 states have return successors, (225), 206 states have call predecessors, (225), 225 states have call successors, (225) [2024-11-23 22:43:57,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6547 states to 6547 states and 8124 transitions. [2024-11-23 22:43:57,871 INFO L78 Accepts]: Start accepts. Automaton has 6547 states and 8124 transitions. Word has length 123 [2024-11-23 22:43:57,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:43:57,871 INFO L471 AbstractCegarLoop]: Abstraction has 6547 states and 8124 transitions. [2024-11-23 22:43:57,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:43:57,871 INFO L276 IsEmpty]: Start isEmpty. Operand 6547 states and 8124 transitions. [2024-11-23 22:43:57,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 22:43:57,873 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:43:57,873 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:43:57,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (70)] Ended with exit code 0 [2024-11-23 22:43:58,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:43:58,074 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:43:58,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:43:58,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1843419911, now seen corresponding path program 1 times [2024-11-23 22:43:58,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:43:58,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913441230] [2024-11-23 22:43:58,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:43:58,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:43:58,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:43:58,077 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:43:58,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2024-11-23 22:43:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:43:58,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-23 22:43:58,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:43:58,618 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 19 treesize of output 1 [2024-11-23 22:43:58,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-23 22:43:59,200 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:43:59,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2024-11-23 22:43:59,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:43:59,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 44 [2024-11-23 22:44:00,025 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:44:00,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 53 [2024-11-23 22:44:01,094 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:44:01,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 42 [2024-11-23 22:44:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 143 proven. 18 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-11-23 22:44:01,267 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:44:02,931 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:44:02,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913441230] [2024-11-23 22:44:02,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913441230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:44:02,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2094885468] [2024-11-23 22:44:02,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:44:02,932 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 22:44:02,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 22:44:02,934 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 22:44:02,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (72)] Waiting until timeout for monitored process [2024-11-23 22:44:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:44:04,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-23 22:44:04,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:44:04,462 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 12 treesize of output 8 [2024-11-23 22:44:05,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2024-11-23 22:44:06,561 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:44:06,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-23 22:44:08,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:44:08,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 59 [2024-11-23 22:44:09,633 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:44:09,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 65 [2024-11-23 22:44:11,801 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:44:11,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 46 [2024-11-23 22:44:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 173 proven. 18 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-23 22:44:12,006 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:44:14,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2094885468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:44:14,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:44:14,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 38 [2024-11-23 22:44:14,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123947947] [2024-11-23 22:44:14,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 22:44:14,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-23 22:44:14,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:44:14,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-23 22:44:14,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=2348, Unknown=0, NotChecked=0, Total=2862 [2024-11-23 22:44:14,492 INFO L87 Difference]: Start difference. First operand 6547 states and 8124 transitions. Second operand has 38 states, 34 states have (on average 4.117647058823529) internal successors, (140), 34 states have internal predecessors, (140), 9 states have call successors, (24), 7 states have call predecessors, (24), 9 states have return successors, (24), 7 states have call predecessors, (24), 9 states have call successors, (24) [2024-11-23 22:44:34,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:44:34,149 INFO L93 Difference]: Finished difference Result 13525 states and 16456 transitions. [2024-11-23 22:44:34,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-23 22:44:34,150 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 34 states have (on average 4.117647058823529) internal successors, (140), 34 states have internal predecessors, (140), 9 states have call successors, (24), 7 states have call predecessors, (24), 9 states have return successors, (24), 7 states have call predecessors, (24), 9 states have call successors, (24) Word has length 123 [2024-11-23 22:44:34,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:44:34,160 INFO L225 Difference]: With dead ends: 13525 [2024-11-23 22:44:34,160 INFO L226 Difference]: Without dead ends: 7858 [2024-11-23 22:44:34,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 276 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1986 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=1540, Invalid=5770, Unknown=0, NotChecked=0, Total=7310 [2024-11-23 22:44:34,165 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 1041 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 2258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:44:34,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 2512 Invalid, 2258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 2046 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2024-11-23 22:44:34,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7858 states. [2024-11-23 22:44:35,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7858 to 6095. [2024-11-23 22:44:35,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6095 states, 5728 states have (on average 1.2314944134078212) internal successors, (7054), 5747 states have internal predecessors, (7054), 225 states have call successors, (225), 141 states have call predecessors, (225), 141 states have return successors, (225), 206 states have call predecessors, (225), 225 states have call successors, (225) [2024-11-23 22:44:35,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6095 states to 6095 states and 7504 transitions. [2024-11-23 22:44:35,664 INFO L78 Accepts]: Start accepts. Automaton has 6095 states and 7504 transitions. Word has length 123 [2024-11-23 22:44:35,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:44:35,664 INFO L471 AbstractCegarLoop]: Abstraction has 6095 states and 7504 transitions. [2024-11-23 22:44:35,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 34 states have (on average 4.117647058823529) internal successors, (140), 34 states have internal predecessors, (140), 9 states have call successors, (24), 7 states have call predecessors, (24), 9 states have return successors, (24), 7 states have call predecessors, (24), 9 states have call successors, (24) [2024-11-23 22:44:35,664 INFO L276 IsEmpty]: Start isEmpty. Operand 6095 states and 7504 transitions. [2024-11-23 22:44:35,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 22:44:35,666 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:44:35,667 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:44:35,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (72)] Ended with exit code 0 [2024-11-23 22:44:35,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (71)] Ended with exit code 0 [2024-11-23 22:44:36,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:44:36,067 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:44:36,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:44:36,068 INFO L85 PathProgramCache]: Analyzing trace with hash -733510388, now seen corresponding path program 1 times [2024-11-23 22:44:36,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:44:36,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155630550] [2024-11-23 22:44:36,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:44:36,068 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:44:36,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:44:36,070 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:44:36,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2024-11-23 22:44:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:44:36,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 22:44:36,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:44:36,748 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:44:36,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 48 [2024-11-23 22:44:36,858 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:44:36,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 28 [2024-11-23 22:44:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-23 22:44:49,048 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:44:49,048 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:44:49,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155630550] [2024-11-23 22:44:49,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155630550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:44:49,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:44:49,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 22:44:49,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138556326] [2024-11-23 22:44:49,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:44:49,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:44:49,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:44:49,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:44:49,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=37, Unknown=3, NotChecked=0, Total=56 [2024-11-23 22:44:49,049 INFO L87 Difference]: Start difference. First operand 6095 states and 7504 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:44:53,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:44:59,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:45:03,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:45:06,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:45:11,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:45:15,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:45:19,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:45:23,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:45:27,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:45:29,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:45:34,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:45:36,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:45:40,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:45:44,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:45:47,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:45:51,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:45:55,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:45:59,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:46:01,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:46:05,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:46:09,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:46:13,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:46:17,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:46:21,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:46:23,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:46:27,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:46:30,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:46:34,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:46:38,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:46:40,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:46:44,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:46:48,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:46:50,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:46:55,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:46:59,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:47:03,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:47:07,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:47:09,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:47:13,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:47:17,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:47:20,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:47:24,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:47:28,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:47:32,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:47:36,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:47:40,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:47:44,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:47:48,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:47:49,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:47:54,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:47:56,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:48:00,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:48:05,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:48:06,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:48:11,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:48:15,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:48:18,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:48:22,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:48:26,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:48:28,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:48:32,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:48:36,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:48:40,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:48:44,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:48:48,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:48:52,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:48:54,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:48:58,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:49:00,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:49:04,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:49:09,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:49:09,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:49:09,693 INFO L93 Difference]: Finished difference Result 11567 states and 14117 transitions. [2024-11-23 22:49:09,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:49:09,694 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 123 [2024-11-23 22:49:09,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:49:09,703 INFO L225 Difference]: With dead ends: 11567 [2024-11-23 22:49:09,703 INFO L226 Difference]: Without dead ends: 6260 [2024-11-23 22:49:09,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=21, Invalid=48, Unknown=3, NotChecked=0, Total=72 [2024-11-23 22:49:09,707 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 167 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 8 mSolverCounterUnsat, 49 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 257.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 49 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 258.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:49:09,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 998 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 557 Invalid, 49 Unknown, 0 Unchecked, 258.3s Time] [2024-11-23 22:49:09,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6260 states. [2024-11-23 22:49:11,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6260 to 5378. [2024-11-23 22:49:11,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5378 states, 5011 states have (on average 1.2278986230293354) internal successors, (6153), 5030 states have internal predecessors, (6153), 225 states have call successors, (225), 141 states have call predecessors, (225), 141 states have return successors, (225), 206 states have call predecessors, (225), 225 states have call successors, (225) [2024-11-23 22:49:11,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 6603 transitions. [2024-11-23 22:49:11,031 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 6603 transitions. Word has length 123 [2024-11-23 22:49:11,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:49:11,031 INFO L471 AbstractCegarLoop]: Abstraction has 5378 states and 6603 transitions. [2024-11-23 22:49:11,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 22:49:11,032 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 6603 transitions. [2024-11-23 22:49:11,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 22:49:11,034 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:49:11,034 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:49:11,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Ended with exit code 0 [2024-11-23 22:49:11,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:49:11,236 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:49:11,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:49:11,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1573712711, now seen corresponding path program 1 times [2024-11-23 22:49:11,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:49:11,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655387637] [2024-11-23 22:49:11,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:49:11,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 22:49:11,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 22:49:11,239 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 22:49:11,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2024-11-23 22:49:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:49:11,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-23 22:49:11,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:49:11,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 22:49:12,504 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 66 treesize of output 30 [2024-11-23 22:49:13,580 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 111 treesize of output 63 [2024-11-23 22:49:14,129 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:49:14,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 192 treesize of output 78 [2024-11-23 22:49:14,490 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-23 22:49:14,490 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:49:15,421 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:49:15,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655387637] [2024-11-23 22:49:15,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655387637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:49:15,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1509199893] [2024-11-23 22:49:15,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:49:15,421 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 22:49:15,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 22:49:15,423 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 22:49:15,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d8081-4c37-4d5a-b9e3-86c5bcb90892/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (75)] Waiting until timeout for monitored process [2024-11-23 22:49:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:49:17,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-23 22:49:17,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:49:17,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 22:49:19,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2024-11-23 22:49:20,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 57 [2024-11-23 22:49:21,532 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:49:21,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 174 treesize of output 78 [2024-11-23 22:49:21,631 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-23 22:49:21,631 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:49:22,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1509199893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:49:22,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:49:22,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 24 [2024-11-23 22:49:22,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839640765] [2024-11-23 22:49:22,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 22:49:22,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-23 22:49:22,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:49:22,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-23 22:49:22,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2024-11-23 22:49:22,152 INFO L87 Difference]: Start difference. First operand 5378 states and 6603 transitions. Second operand has 25 states, 23 states have (on average 6.0) internal successors, (138), 22 states have internal predecessors, (138), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24)