./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-43.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_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-43.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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_3f33e295-b6e4-426d-820c-2446af852c84/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 3866fcabc53f8729ce5445d739af818fee4df02a7fd7be02b76364ea8cb9d346 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:31:53,064 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:31:53,151 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 18:31:53,156 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:31:53,157 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:31:53,181 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:31:53,181 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:31:53,182 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:31:53,182 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:31:53,182 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:31:53,182 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:31:53,182 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:31:53,183 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:31:53,183 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:31:53,183 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:31:53,183 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:31:53,183 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:31:53,183 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:31:53,183 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:31:53,183 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:31:53,183 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:31:53,184 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:31:53,184 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:31:53,184 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:31:53,184 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:31:53,184 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:31:53,184 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:31:53,185 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:31:53,185 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:31:53,185 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:31:53,185 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:31:53,185 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:31:53,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:31:53,186 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:31:53,186 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:31:53,186 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:31:53,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:31:53,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:31:53,186 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:31:53,186 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:31:53,187 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:31:53,187 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:31:53,187 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:31:53,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:31:53,187 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:31:53,187 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:31:53,187 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:31:53,187 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:31:53,188 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_3f33e295-b6e4-426d-820c-2446af852c84/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 -> 3866fcabc53f8729ce5445d739af818fee4df02a7fd7be02b76364ea8cb9d346 [2024-11-23 18:31:53,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:31:53,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:31:53,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:31:53,459 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:31:53,459 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:31:53,461 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-43.i [2024-11-23 18:31:56,842 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/data/2df89afdc/ca2ecaef34cc4ba29661e0526dc1fbe3/FLAG064e0fa6e [2024-11-23 18:31:57,204 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:31:57,204 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-43.i [2024-11-23 18:31:57,234 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/data/2df89afdc/ca2ecaef34cc4ba29661e0526dc1fbe3/FLAG064e0fa6e [2024-11-23 18:31:57,258 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/data/2df89afdc/ca2ecaef34cc4ba29661e0526dc1fbe3 [2024-11-23 18:31:57,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:31:57,263 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:31:57,265 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:31:57,265 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:31:57,275 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:31:57,277 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:31:57" (1/1) ... [2024-11-23 18:31:57,280 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73dc37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:31:57, skipping insertion in model container [2024-11-23 18:31:57,281 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:31:57" (1/1) ... [2024-11-23 18:31:57,313 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:31:57,523 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-43.i[916,929] [2024-11-23 18:31:57,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:31:57,671 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:31:57,687 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_3f33e295-b6e4-426d-820c-2446af852c84/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-43.i[916,929] [2024-11-23 18:31:57,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:31:57,791 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:31:57,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:31:57 WrapperNode [2024-11-23 18:31:57,793 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:31:57,794 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:31:57,794 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:31:57,794 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:31:57,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:31:57" (1/1) ... [2024-11-23 18:31:57,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:31:57" (1/1) ... [2024-11-23 18:31:57,869 INFO L138 Inliner]: procedures = 30, calls = 176, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 540 [2024-11-23 18:31:57,870 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:31:57,870 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:31:57,871 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:31:57,871 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:31:57,890 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:31:57" (1/1) ... [2024-11-23 18:31:57,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:31:57" (1/1) ... [2024-11-23 18:31:57,904 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:31:57" (1/1) ... [2024-11-23 18:31:57,916 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-11-23 18:31:57,917 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:31:57" (1/1) ... [2024-11-23 18:31:57,917 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:31:57" (1/1) ... [2024-11-23 18:31:57,941 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:31:57" (1/1) ... [2024-11-23 18:31:57,947 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:31:57" (1/1) ... [2024-11-23 18:31:57,953 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:31:57" (1/1) ... [2024-11-23 18:31:57,957 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:31:57" (1/1) ... [2024-11-23 18:31:57,959 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:31:57" (1/1) ... [2024-11-23 18:31:57,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:31:57,967 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:31:57,967 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:31:57,967 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:31:57,968 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:31:57" (1/1) ... [2024-11-23 18:31:57,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:31:58,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:58,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:31:58,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:31:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:31:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-11-23 18:31:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-23 18:31:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-23 18:31:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-23 18:31:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-23 18:31:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-23 18:31:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 18:31:58,077 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 18:31:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-23 18:31:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:31:58,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:31:58,269 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:31:58,272 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:31:59,443 INFO L? ?]: Removed 133 outVars from TransFormulas that were not future-live. [2024-11-23 18:31:59,443 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:31:59,468 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:31:59,469 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 18:31:59,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:31:59 BoogieIcfgContainer [2024-11-23 18:31:59,469 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:31:59,473 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:31:59,473 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:31:59,481 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:31:59,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:31:57" (1/3) ... [2024-11-23 18:31:59,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4271f345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:31:59, skipping insertion in model container [2024-11-23 18:31:59,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:31:57" (2/3) ... [2024-11-23 18:31:59,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4271f345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:31:59, skipping insertion in model container [2024-11-23 18:31:59,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:31:59" (3/3) ... [2024-11-23 18:31:59,485 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-43.i [2024-11-23 18:31:59,506 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:31:59,508 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-s_file-43.i that has 2 procedures, 126 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 18:31:59,591 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:31:59,609 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;@4ecc091c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:31:59,609 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:31:59,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 103 states have (on average 1.4271844660194175) internal successors, (147), 104 states have internal predecessors, (147), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-23 18:31:59,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 18:31:59,634 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:59,635 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:59,635 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:59,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:59,646 INFO L85 PathProgramCache]: Analyzing trace with hash 2025586780, now seen corresponding path program 1 times [2024-11-23 18:31:59,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:59,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248675577] [2024-11-23 18:31:59,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:59,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-23 18:32:00,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:00,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248675577] [2024-11-23 18:32:00,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248675577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:32:00,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909814248] [2024-11-23 18:32:00,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:00,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:32:00,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:32:00,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:32:00,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:32:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:00,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 18:32:00,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:32:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-23 18:32:01,019 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:32:01,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909814248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:01,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:32:01,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 18:32:01,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146621514] [2024-11-23 18:32:01,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:01,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 18:32:01,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:01,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 18:32:01,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:32:01,066 INFO L87 Difference]: Start difference. First operand has 126 states, 103 states have (on average 1.4271844660194175) internal successors, (147), 104 states have internal predecessors, (147), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:01,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:01,106 INFO L93 Difference]: Finished difference Result 245 states and 388 transitions. [2024-11-23 18:32:01,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 18:32:01,109 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 168 [2024-11-23 18:32:01,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:01,120 INFO L225 Difference]: With dead ends: 245 [2024-11-23 18:32:01,120 INFO L226 Difference]: Without dead ends: 122 [2024-11-23 18:32:01,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 169 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 18:32:01,130 INFO L435 NwaCegarLoop]: 180 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, 180 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 18:32:01,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:32:01,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-23 18:32:01,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-23 18:32:01,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 100 states have (on average 1.4) internal successors, (140), 100 states have internal predecessors, (140), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-23 18:32:01,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 180 transitions. [2024-11-23 18:32:01,187 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 180 transitions. Word has length 168 [2024-11-23 18:32:01,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:01,188 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 180 transitions. [2024-11-23 18:32:01,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:01,189 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 180 transitions. [2024-11-23 18:32:01,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 18:32:01,193 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:01,194 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:01,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 18:32:01,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:32:01,399 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:01,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:01,401 INFO L85 PathProgramCache]: Analyzing trace with hash 176494844, now seen corresponding path program 1 times [2024-11-23 18:32:01,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:01,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46589732] [2024-11-23 18:32:01,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:01,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:32:02,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:02,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46589732] [2024-11-23 18:32:02,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46589732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:02,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:02,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:32:02,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654441244] [2024-11-23 18:32:02,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:02,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:32:02,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:02,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:32:02,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:32:02,097 INFO L87 Difference]: Start difference. First operand 122 states and 180 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:02,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:02,168 INFO L93 Difference]: Finished difference Result 243 states and 360 transitions. [2024-11-23 18:32:02,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:32:02,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 168 [2024-11-23 18:32:02,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:02,174 INFO L225 Difference]: With dead ends: 243 [2024-11-23 18:32:02,174 INFO L226 Difference]: Without dead ends: 124 [2024-11-23 18:32:02,175 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 18:32:02,179 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 523 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 18:32:02,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 523 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:32:02,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-23 18:32:02,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-23 18:32:02,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 102 states have (on average 1.392156862745098) internal successors, (142), 102 states have internal predecessors, (142), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-23 18:32:02,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 182 transitions. [2024-11-23 18:32:02,217 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 182 transitions. Word has length 168 [2024-11-23 18:32:02,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:02,219 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 182 transitions. [2024-11-23 18:32:02,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:02,222 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 182 transitions. [2024-11-23 18:32:02,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 18:32:02,228 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:02,228 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:02,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 18:32:02,228 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:02,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:02,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1720484614, now seen corresponding path program 1 times [2024-11-23 18:32:02,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:02,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138704872] [2024-11-23 18:32:02,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:02,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:02,851 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:32:02,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:02,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138704872] [2024-11-23 18:32:02,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138704872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:02,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:02,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:32:02,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002919360] [2024-11-23 18:32:02,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:02,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:32:02,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:02,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:32:02,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:32:02,858 INFO L87 Difference]: Start difference. First operand 124 states and 182 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:32:02,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:02,941 INFO L93 Difference]: Finished difference Result 248 states and 365 transitions. [2024-11-23 18:32:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:32:02,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 168 [2024-11-23 18:32:02,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:02,947 INFO L225 Difference]: With dead ends: 248 [2024-11-23 18:32:02,951 INFO L226 Difference]: Without dead ends: 127 [2024-11-23 18:32:02,952 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 18:32:02,953 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 1 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:02,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 520 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:32:02,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-23 18:32:02,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2024-11-23 18:32:02,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 104 states have (on average 1.3846153846153846) internal successors, (144), 104 states have internal predecessors, (144), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-23 18:32:02,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 184 transitions. [2024-11-23 18:32:02,978 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 184 transitions. Word has length 168 [2024-11-23 18:32:02,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:02,981 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 184 transitions. [2024-11-23 18:32:02,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:32:02,981 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 184 transitions. [2024-11-23 18:32:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 18:32:02,988 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:02,989 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:02,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 18:32:02,989 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:02,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:02,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1040426244, now seen corresponding path program 1 times [2024-11-23 18:32:02,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:02,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119649870] [2024-11-23 18:32:02,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:02,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:03,467 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:32:03,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:03,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119649870] [2024-11-23 18:32:03,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119649870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:03,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:03,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:32:03,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418648139] [2024-11-23 18:32:03,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:03,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:32:03,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:03,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:32:03,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:32:03,470 INFO L87 Difference]: Start difference. First operand 126 states and 184 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:32:03,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:03,519 INFO L93 Difference]: Finished difference Result 252 states and 369 transitions. [2024-11-23 18:32:03,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:32:03,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 168 [2024-11-23 18:32:03,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:03,524 INFO L225 Difference]: With dead ends: 252 [2024-11-23 18:32:03,524 INFO L226 Difference]: Without dead ends: 129 [2024-11-23 18:32:03,527 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 18:32:03,528 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 1 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:03,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 521 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:32:03,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-23 18:32:03,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2024-11-23 18:32:03,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 106 states have (on average 1.3773584905660377) internal successors, (146), 106 states have internal predecessors, (146), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-23 18:32:03,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 186 transitions. [2024-11-23 18:32:03,549 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 186 transitions. Word has length 168 [2024-11-23 18:32:03,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:03,550 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 186 transitions. [2024-11-23 18:32:03,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:32:03,550 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 186 transitions. [2024-11-23 18:32:03,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 18:32:03,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:03,554 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:03,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 18:32:03,554 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:03,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:03,555 INFO L85 PathProgramCache]: Analyzing trace with hash 734581118, now seen corresponding path program 1 times [2024-11-23 18:32:03,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:03,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520846472] [2024-11-23 18:32:03,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:03,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:03,889 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:32:03,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:03,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520846472] [2024-11-23 18:32:03,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520846472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:03,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:03,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:32:03,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035666453] [2024-11-23 18:32:03,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:03,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:32:03,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:03,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:32:03,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:32:03,894 INFO L87 Difference]: Start difference. First operand 128 states and 186 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:32:03,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:03,951 INFO L93 Difference]: Finished difference Result 256 states and 373 transitions. [2024-11-23 18:32:03,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:32:03,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 168 [2024-11-23 18:32:03,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:03,956 INFO L225 Difference]: With dead ends: 256 [2024-11-23 18:32:03,957 INFO L226 Difference]: Without dead ends: 131 [2024-11-23 18:32:03,958 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 18:32:03,959 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 1 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:03,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 523 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:32:03,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-23 18:32:03,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2024-11-23 18:32:03,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 108 states have (on average 1.3703703703703705) internal successors, (148), 108 states have internal predecessors, (148), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-23 18:32:03,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 188 transitions. [2024-11-23 18:32:03,983 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 188 transitions. Word has length 168 [2024-11-23 18:32:03,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:03,983 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 188 transitions. [2024-11-23 18:32:03,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:32:03,984 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 188 transitions. [2024-11-23 18:32:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 18:32:03,988 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:03,989 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:03,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 18:32:03,989 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:03,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:03,990 INFO L85 PathProgramCache]: Analyzing trace with hash 736428160, now seen corresponding path program 1 times [2024-11-23 18:32:03,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:03,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846022042] [2024-11-23 18:32:03,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:03,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:32:05,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:05,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846022042] [2024-11-23 18:32:05,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846022042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:05,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:05,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 18:32:05,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718266108] [2024-11-23 18:32:05,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:05,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:32:05,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:05,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:32:05,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:05,232 INFO L87 Difference]: Start difference. First operand 130 states and 188 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:32:06,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:06,087 INFO L93 Difference]: Finished difference Result 371 states and 535 transitions. [2024-11-23 18:32:06,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:32:06,088 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 168 [2024-11-23 18:32:06,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:06,092 INFO L225 Difference]: With dead ends: 371 [2024-11-23 18:32:06,093 INFO L226 Difference]: Without dead ends: 244 [2024-11-23 18:32:06,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:32:06,095 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 136 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:06,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1005 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 18:32:06,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-23 18:32:06,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 138. [2024-11-23 18:32:06,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 116 states have (on average 1.3706896551724137) internal successors, (159), 116 states have internal predecessors, (159), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-23 18:32:06,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 199 transitions. [2024-11-23 18:32:06,126 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 199 transitions. Word has length 168 [2024-11-23 18:32:06,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:06,130 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 199 transitions. [2024-11-23 18:32:06,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:32:06,131 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 199 transitions. [2024-11-23 18:32:06,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 18:32:06,137 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:06,137 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:06,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 18:32:06,138 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:06,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:06,139 INFO L85 PathProgramCache]: Analyzing trace with hash -284640194, now seen corresponding path program 1 times [2024-11-23 18:32:06,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:06,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890403563] [2024-11-23 18:32:06,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:06,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:08,071 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:32:08,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:08,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890403563] [2024-11-23 18:32:08,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890403563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:08,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:08,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 18:32:08,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124881214] [2024-11-23 18:32:08,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:08,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:32:08,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:08,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:32:08,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:08,077 INFO L87 Difference]: Start difference. First operand 138 states and 199 transitions. Second operand has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:09,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:09,746 INFO L93 Difference]: Finished difference Result 378 states and 544 transitions. [2024-11-23 18:32:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:32:09,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 168 [2024-11-23 18:32:09,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:09,750 INFO L225 Difference]: With dead ends: 378 [2024-11-23 18:32:09,750 INFO L226 Difference]: Without dead ends: 243 [2024-11-23 18:32:09,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:32:09,751 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 132 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:09,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 809 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 18:32:09,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-23 18:32:09,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 138. [2024-11-23 18:32:09,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 116 states have (on average 1.3620689655172413) internal successors, (158), 116 states have internal predecessors, (158), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-23 18:32:09,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 198 transitions. [2024-11-23 18:32:09,764 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 198 transitions. Word has length 168 [2024-11-23 18:32:09,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:09,765 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 198 transitions. [2024-11-23 18:32:09,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:09,765 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 198 transitions. [2024-11-23 18:32:09,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 18:32:09,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:09,767 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:09,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 18:32:09,768 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:09,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:09,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1058318679, now seen corresponding path program 1 times [2024-11-23 18:32:09,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:09,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199841375] [2024-11-23 18:32:09,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:09,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-23 18:32:11,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:11,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199841375] [2024-11-23 18:32:11,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199841375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:32:11,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948630591] [2024-11-23 18:32:11,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:11,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:32:11,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:32:11,874 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:32:11,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:32:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:12,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-23 18:32:12,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:32:12,571 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 29 treesize of output 13 [2024-11-23 18:32:12,628 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 29 treesize of output 13 [2024-11-23 18:32:12,693 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 29 treesize of output 13 [2024-11-23 18:32:12,756 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 29 treesize of output 13 [2024-11-23 18:32:12,819 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 29 treesize of output 13 [2024-11-23 18:32:12,883 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 29 treesize of output 13 [2024-11-23 18:32:12,940 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 29 treesize of output 13 [2024-11-23 18:32:13,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:32:13,010 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 40 treesize of output 49 [2024-11-23 18:32:13,119 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:32:13,119 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 49 treesize of output 13 [2024-11-23 18:32:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 267 proven. 45 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2024-11-23 18:32:13,152 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:32:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-23 18:32:13,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948630591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:32:13,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:32:13,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-11-23 18:32:13,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237377717] [2024-11-23 18:32:13,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:32:13,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 18:32:13,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:13,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 18:32:13,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-23 18:32:13,694 INFO L87 Difference]: Start difference. First operand 138 states and 198 transitions. Second operand has 16 states, 13 states have (on average 9.538461538461538) internal successors, (124), 16 states have internal predecessors, (124), 7 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (52), 4 states have call predecessors, (52), 7 states have call successors, (52) [2024-11-23 18:32:15,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:15,440 INFO L93 Difference]: Finished difference Result 315 states and 449 transitions. [2024-11-23 18:32:15,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 18:32:15,444 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 9.538461538461538) internal successors, (124), 16 states have internal predecessors, (124), 7 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (52), 4 states have call predecessors, (52), 7 states have call successors, (52) Word has length 168 [2024-11-23 18:32:15,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:15,446 INFO L225 Difference]: With dead ends: 315 [2024-11-23 18:32:15,446 INFO L226 Difference]: Without dead ends: 180 [2024-11-23 18:32:15,447 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2024-11-23 18:32:15,450 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 328 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:15,450 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 645 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 18:32:15,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-23 18:32:15,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 177. [2024-11-23 18:32:15,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 149 states have (on average 1.3557046979865772) internal successors, (202), 150 states have internal predecessors, (202), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-23 18:32:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 250 transitions. [2024-11-23 18:32:15,472 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 250 transitions. Word has length 168 [2024-11-23 18:32:15,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:15,473 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 250 transitions. [2024-11-23 18:32:15,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 9.538461538461538) internal successors, (124), 16 states have internal predecessors, (124), 7 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (52), 4 states have call predecessors, (52), 7 states have call successors, (52) [2024-11-23 18:32:15,473 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 250 transitions. [2024-11-23 18:32:15,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:32:15,476 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:15,476 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:15,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 18:32:15,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:32:15,681 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:15,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:15,681 INFO L85 PathProgramCache]: Analyzing trace with hash 39089738, now seen corresponding path program 1 times [2024-11-23 18:32:15,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:15,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027430303] [2024-11-23 18:32:15,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:15,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-23 18:32:17,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:17,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027430303] [2024-11-23 18:32:17,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027430303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:32:17,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902565340] [2024-11-23 18:32:17,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:17,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:32:17,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:32:17,601 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:32:17,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 18:32:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:18,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-23 18:32:18,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:32:18,123 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 29 treesize of output 13 [2024-11-23 18:32:18,174 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 29 treesize of output 13 [2024-11-23 18:32:18,225 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 29 treesize of output 13 [2024-11-23 18:32:18,280 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 29 treesize of output 13 [2024-11-23 18:32:18,328 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 29 treesize of output 13 [2024-11-23 18:32:18,374 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 29 treesize of output 13 [2024-11-23 18:32:18,423 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 29 treesize of output 13 [2024-11-23 18:32:18,479 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:32:18,479 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 40 treesize of output 49 [2024-11-23 18:32:18,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:32:18,570 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 49 treesize of output 13 [2024-11-23 18:32:18,646 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 267 proven. 45 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2024-11-23 18:32:18,646 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:32:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-23 18:32:19,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902565340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:32:19,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:32:19,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 21 [2024-11-23 18:32:19,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845055322] [2024-11-23 18:32:19,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:32:19,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-23 18:32:19,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:19,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-23 18:32:19,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2024-11-23 18:32:19,179 INFO L87 Difference]: Start difference. First operand 177 states and 250 transitions. Second operand has 21 states, 18 states have (on average 6.388888888888889) internal successors, (115), 21 states have internal predecessors, (115), 6 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (52), 3 states have call predecessors, (52), 6 states have call successors, (52) [2024-11-23 18:32:21,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:21,338 INFO L93 Difference]: Finished difference Result 325 states and 456 transitions. [2024-11-23 18:32:21,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-23 18:32:21,340 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 6.388888888888889) internal successors, (115), 21 states have internal predecessors, (115), 6 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (52), 3 states have call predecessors, (52), 6 states have call successors, (52) Word has length 169 [2024-11-23 18:32:21,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:21,342 INFO L225 Difference]: With dead ends: 325 [2024-11-23 18:32:21,344 INFO L226 Difference]: Without dead ends: 182 [2024-11-23 18:32:21,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=699, Unknown=0, NotChecked=0, Total=870 [2024-11-23 18:32:21,346 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 420 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:21,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 959 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-23 18:32:21,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-23 18:32:21,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 179. [2024-11-23 18:32:21,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 151 states have (on average 1.3509933774834437) internal successors, (204), 152 states have internal predecessors, (204), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-23 18:32:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 252 transitions. [2024-11-23 18:32:21,373 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 252 transitions. Word has length 169 [2024-11-23 18:32:21,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:21,374 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 252 transitions. [2024-11-23 18:32:21,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 6.388888888888889) internal successors, (115), 21 states have internal predecessors, (115), 6 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (52), 3 states have call predecessors, (52), 6 states have call successors, (52) [2024-11-23 18:32:21,378 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 252 transitions. [2024-11-23 18:32:21,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:32:21,380 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:21,380 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:21,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 18:32:21,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:32:21,581 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:21,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:21,582 INFO L85 PathProgramCache]: Analyzing trace with hash 179638348, now seen corresponding path program 1 times [2024-11-23 18:32:21,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:21,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318989275] [2024-11-23 18:32:21,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:21,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-23 18:32:22,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:22,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318989275] [2024-11-23 18:32:22,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318989275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:22,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:22,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 18:32:22,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157512668] [2024-11-23 18:32:22,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:22,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:32:22,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:22,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:32:22,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:32:22,335 INFO L87 Difference]: Start difference. First operand 179 states and 252 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:23,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:23,552 INFO L93 Difference]: Finished difference Result 324 states and 451 transitions. [2024-11-23 18:32:23,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 18:32:23,553 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 169 [2024-11-23 18:32:23,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:23,559 INFO L225 Difference]: With dead ends: 324 [2024-11-23 18:32:23,559 INFO L226 Difference]: Without dead ends: 179 [2024-11-23 18:32:23,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2024-11-23 18:32:23,563 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 233 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:23,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 406 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 18:32:23,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-23 18:32:23,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2024-11-23 18:32:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 146 states have (on average 1.3424657534246576) internal successors, (196), 147 states have internal predecessors, (196), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-23 18:32:23,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 244 transitions. [2024-11-23 18:32:23,588 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 244 transitions. Word has length 169 [2024-11-23 18:32:23,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:23,589 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 244 transitions. [2024-11-23 18:32:23,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:23,589 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 244 transitions. [2024-11-23 18:32:23,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:32:23,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:23,594 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:23,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 18:32:23,595 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:23,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:23,596 INFO L85 PathProgramCache]: Analyzing trace with hash 280449655, now seen corresponding path program 1 times [2024-11-23 18:32:23,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:23,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912078865] [2024-11-23 18:32:23,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:23,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:24,592 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:32:24,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:24,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912078865] [2024-11-23 18:32:24,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912078865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:24,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:24,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 18:32:24,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581075807] [2024-11-23 18:32:24,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:24,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:32:24,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:24,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:32:24,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:24,595 INFO L87 Difference]: Start difference. First operand 175 states and 244 transitions. Second operand has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:25,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:25,630 INFO L93 Difference]: Finished difference Result 439 states and 605 transitions. [2024-11-23 18:32:25,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:32:25,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 169 [2024-11-23 18:32:25,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:25,634 INFO L225 Difference]: With dead ends: 439 [2024-11-23 18:32:25,636 INFO L226 Difference]: Without dead ends: 298 [2024-11-23 18:32:25,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:32:25,637 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 229 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:25,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 432 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 18:32:25,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-23 18:32:25,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 286. [2024-11-23 18:32:25,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 236 states have (on average 1.3305084745762712) internal successors, (314), 238 states have internal predecessors, (314), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-23 18:32:25,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 398 transitions. [2024-11-23 18:32:25,675 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 398 transitions. Word has length 169 [2024-11-23 18:32:25,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:25,676 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 398 transitions. [2024-11-23 18:32:25,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:25,676 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 398 transitions. [2024-11-23 18:32:25,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:32:25,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:25,679 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:25,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 18:32:25,679 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:25,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:25,680 INFO L85 PathProgramCache]: Analyzing trace with hash -740618699, now seen corresponding path program 1 times [2024-11-23 18:32:25,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:25,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559105207] [2024-11-23 18:32:25,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:25,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:32:28,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:28,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559105207] [2024-11-23 18:32:28,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559105207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:28,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:28,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 18:32:28,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997375810] [2024-11-23 18:32:28,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:28,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:32:28,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:28,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:32:28,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:32:28,636 INFO L87 Difference]: Start difference. First operand 286 states and 398 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:32:29,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:29,848 INFO L93 Difference]: Finished difference Result 972 states and 1343 transitions. [2024-11-23 18:32:29,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:32:29,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 169 [2024-11-23 18:32:29,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:29,854 INFO L225 Difference]: With dead ends: 972 [2024-11-23 18:32:29,855 INFO L226 Difference]: Without dead ends: 720 [2024-11-23 18:32:29,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:32:29,857 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 260 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:29,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 940 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 18:32:29,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-11-23 18:32:29,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 499. [2024-11-23 18:32:29,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 406 states have (on average 1.3152709359605912) internal successors, (534), 407 states have internal predecessors, (534), 78 states have call successors, (78), 14 states have call predecessors, (78), 14 states have return successors, (78), 77 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-23 18:32:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 690 transitions. [2024-11-23 18:32:29,935 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 690 transitions. Word has length 169 [2024-11-23 18:32:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:29,935 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 690 transitions. [2024-11-23 18:32:29,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:32:29,936 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 690 transitions. [2024-11-23 18:32:29,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:32:29,939 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:29,939 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:29,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 18:32:29,940 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:29,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:29,940 INFO L85 PathProgramCache]: Analyzing trace with hash 602340174, now seen corresponding path program 1 times [2024-11-23 18:32:29,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:29,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670349923] [2024-11-23 18:32:29,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:29,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:30,833 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:32:30,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:30,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670349923] [2024-11-23 18:32:30,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670349923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:30,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:30,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 18:32:30,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596692185] [2024-11-23 18:32:30,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:30,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:32:30,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:30,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:32:30,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:30,838 INFO L87 Difference]: Start difference. First operand 499 states and 690 transitions. Second operand has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:31,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:31,725 INFO L93 Difference]: Finished difference Result 1174 states and 1612 transitions. [2024-11-23 18:32:31,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:32:31,726 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 169 [2024-11-23 18:32:31,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:31,731 INFO L225 Difference]: With dead ends: 1174 [2024-11-23 18:32:31,731 INFO L226 Difference]: Without dead ends: 745 [2024-11-23 18:32:31,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:32:31,733 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 133 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:31,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 541 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 18:32:31,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2024-11-23 18:32:31,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 501. [2024-11-23 18:32:31,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 408 states have (on average 1.3137254901960784) internal successors, (536), 409 states have internal predecessors, (536), 78 states have call successors, (78), 14 states have call predecessors, (78), 14 states have return successors, (78), 77 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-23 18:32:31,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 692 transitions. [2024-11-23 18:32:31,800 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 692 transitions. Word has length 169 [2024-11-23 18:32:31,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:31,804 INFO L471 AbstractCegarLoop]: Abstraction has 501 states and 692 transitions. [2024-11-23 18:32:31,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:31,804 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 692 transitions. [2024-11-23 18:32:31,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:32:31,808 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:31,808 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:31,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 18:32:31,809 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:31,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:31,809 INFO L85 PathProgramCache]: Analyzing trace with hash -418728180, now seen corresponding path program 1 times [2024-11-23 18:32:31,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:31,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189262516] [2024-11-23 18:32:31,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:31,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-23 18:32:32,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:32,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189262516] [2024-11-23 18:32:32,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189262516] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:32:32,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690222190] [2024-11-23 18:32:32,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:32,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:32:32,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:32:32,096 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:32:32,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 18:32:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:32,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 18:32:32,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:32:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:32:32,623 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:32:32,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690222190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:32,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:32:32,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2024-11-23 18:32:32,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164193767] [2024-11-23 18:32:32,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:32,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:32:32,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:32,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:32:32,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:32:32,626 INFO L87 Difference]: Start difference. First operand 501 states and 692 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:32:32,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:32,702 INFO L93 Difference]: Finished difference Result 941 states and 1298 transitions. [2024-11-23 18:32:32,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:32:32,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 169 [2024-11-23 18:32:32,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:32,709 INFO L225 Difference]: With dead ends: 941 [2024-11-23 18:32:32,709 INFO L226 Difference]: Without dead ends: 510 [2024-11-23 18:32:32,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:32:32,711 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:32,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 690 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:32:32,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-11-23 18:32:32,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 508. [2024-11-23 18:32:32,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 415 states have (on average 1.308433734939759) internal successors, (543), 416 states have internal predecessors, (543), 78 states have call successors, (78), 14 states have call predecessors, (78), 14 states have return successors, (78), 77 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-23 18:32:32,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 699 transitions. [2024-11-23 18:32:32,806 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 699 transitions. Word has length 169 [2024-11-23 18:32:32,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:32,807 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 699 transitions. [2024-11-23 18:32:32,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:32:32,807 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 699 transitions. [2024-11-23 18:32:32,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:32:32,811 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:32,811 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:32,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 18:32:33,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:32:33,012 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:33,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:33,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1586488949, now seen corresponding path program 1 times [2024-11-23 18:32:33,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:33,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731364533] [2024-11-23 18:32:33,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:33,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:33,717 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-23 18:32:33,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:33,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731364533] [2024-11-23 18:32:33,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731364533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:33,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:33,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 18:32:33,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277406869] [2024-11-23 18:32:33,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:33,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:32:33,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:33,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:32:33,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:32:33,720 INFO L87 Difference]: Start difference. First operand 508 states and 699 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:34,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:34,958 INFO L93 Difference]: Finished difference Result 960 states and 1314 transitions. [2024-11-23 18:32:34,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 18:32:34,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 169 [2024-11-23 18:32:34,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:34,965 INFO L225 Difference]: With dead ends: 960 [2024-11-23 18:32:34,965 INFO L226 Difference]: Without dead ends: 522 [2024-11-23 18:32:34,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2024-11-23 18:32:34,969 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 233 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:34,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 401 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 18:32:34,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-23 18:32:35,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 508. [2024-11-23 18:32:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 415 states have (on average 1.3012048192771084) internal successors, (540), 416 states have internal predecessors, (540), 78 states have call successors, (78), 14 states have call predecessors, (78), 14 states have return successors, (78), 77 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-23 18:32:35,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 696 transitions. [2024-11-23 18:32:35,029 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 696 transitions. Word has length 169 [2024-11-23 18:32:35,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:35,030 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 696 transitions. [2024-11-23 18:32:35,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:35,031 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 696 transitions. [2024-11-23 18:32:35,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:32:35,033 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:35,034 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:35,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 18:32:35,034 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:35,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:35,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2009190775, now seen corresponding path program 1 times [2024-11-23 18:32:35,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:35,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054274533] [2024-11-23 18:32:35,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:35,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:32:35,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:35,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054274533] [2024-11-23 18:32:35,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054274533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:35,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:35,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 18:32:35,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074269321] [2024-11-23 18:32:35,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:35,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:32:35,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:35,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:32:35,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:35,747 INFO L87 Difference]: Start difference. First operand 508 states and 696 transitions. Second operand has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:36,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:36,583 INFO L93 Difference]: Finished difference Result 1179 states and 1607 transitions. [2024-11-23 18:32:36,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:32:36,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 169 [2024-11-23 18:32:36,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:36,590 INFO L225 Difference]: With dead ends: 1179 [2024-11-23 18:32:36,590 INFO L226 Difference]: Without dead ends: 741 [2024-11-23 18:32:36,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:32:36,593 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 134 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:36,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 585 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 18:32:36,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-11-23 18:32:36,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 505. [2024-11-23 18:32:36,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 412 states have (on average 1.296116504854369) internal successors, (534), 413 states have internal predecessors, (534), 78 states have call successors, (78), 14 states have call predecessors, (78), 14 states have return successors, (78), 77 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-23 18:32:36,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 690 transitions. [2024-11-23 18:32:36,651 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 690 transitions. Word has length 169 [2024-11-23 18:32:36,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:36,651 INFO L471 AbstractCegarLoop]: Abstraction has 505 states and 690 transitions. [2024-11-23 18:32:36,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:36,652 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 690 transitions. [2024-11-23 18:32:36,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:32:36,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:36,656 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:36,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 18:32:36,656 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:36,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:36,658 INFO L85 PathProgramCache]: Analyzing trace with hash 988122421, now seen corresponding path program 1 times [2024-11-23 18:32:36,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:36,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107487228] [2024-11-23 18:32:36,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:36,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 18:32:36,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311526072] [2024-11-23 18:32:36,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:36,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:32:36,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:32:36,795 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:32:36,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 18:32:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 18:32:39,263 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 18:32:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 18:32:40,526 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 18:32:40,526 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-23 18:32:40,527 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-23 18:32:40,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 18:32:40,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 18:32:40,733 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:40,846 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-23 18:32:40,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 06:32:40 BoogieIcfgContainer [2024-11-23 18:32:40,850 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-23 18:32:40,851 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 18:32:40,851 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 18:32:40,851 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 18:32:40,852 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:31:59" (3/4) ... [2024-11-23 18:32:40,855 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-23 18:32:40,856 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 18:32:40,857 INFO L158 Benchmark]: Toolchain (without parser) took 43594.01ms. Allocated memory was 142.6MB in the beginning and 805.3MB in the end (delta: 662.7MB). Free memory was 106.3MB in the beginning and 507.8MB in the end (delta: -401.5MB). Peak memory consumption was 259.3MB. Max. memory is 16.1GB. [2024-11-23 18:32:40,857 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 167.8MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 18:32:40,858 INFO L158 Benchmark]: CACSL2BoogieTranslator took 528.08ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 88.0MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-23 18:32:40,858 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.10ms. Allocated memory is still 142.6MB. Free memory was 88.0MB in the beginning and 83.7MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 18:32:40,858 INFO L158 Benchmark]: Boogie Preprocessor took 95.33ms. Allocated memory is still 142.6MB. Free memory was 83.7MB in the beginning and 80.2MB in the end (delta: 3.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 18:32:40,859 INFO L158 Benchmark]: RCFGBuilder took 1502.31ms. Allocated memory is still 142.6MB. Free memory was 79.9MB in the beginning and 45.1MB in the end (delta: 34.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-23 18:32:40,859 INFO L158 Benchmark]: TraceAbstraction took 41377.07ms. Allocated memory was 142.6MB in the beginning and 805.3MB in the end (delta: 662.7MB). Free memory was 44.5MB in the beginning and 508.0MB in the end (delta: -463.6MB). Peak memory consumption was 200.6MB. Max. memory is 16.1GB. [2024-11-23 18:32:40,860 INFO L158 Benchmark]: Witness Printer took 5.46ms. Allocated memory is still 805.3MB. Free memory was 508.0MB in the beginning and 507.8MB in the end (delta: 253.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 18:32:40,861 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 167.8MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 528.08ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 88.0MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.10ms. Allocated memory is still 142.6MB. Free memory was 88.0MB in the beginning and 83.7MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 95.33ms. Allocated memory is still 142.6MB. Free memory was 83.7MB in the beginning and 80.2MB in the end (delta: 3.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1502.31ms. Allocated memory is still 142.6MB. Free memory was 79.9MB in the beginning and 45.1MB in the end (delta: 34.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 41377.07ms. Allocated memory was 142.6MB in the beginning and 805.3MB in the end (delta: 662.7MB). Free memory was 44.5MB in the beginning and 508.0MB in the end (delta: -463.6MB). Peak memory consumption was 200.6MB. Max. memory is 16.1GB. * Witness Printer took 5.46ms. Allocated memory is still 805.3MB. Free memory was 508.0MB in the beginning and 507.8MB in the end (delta: 253.6kB). 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 102, overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryFLOATComparisonOperation at line 81, overapproximation of someBinaryFLOATComparisonOperation at line 131, overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryFLOATComparisonOperation at line 131, overapproximation of someBinaryFLOATComparisonOperation at line 96, overapproximation of someBinaryFLOATComparisonOperation at line 81, overapproximation of someBinaryFLOATComparisonOperation at line 102, overapproximation of someBinaryFLOATComparisonOperation at line 96, overapproximation of someBinaryFLOATComparisonOperation at line 100, overapproximation of someBinaryFLOATComparisonOperation at line 100. Possible FailurePath: [L42] unsigned char isInitial = 0; [L43-L62] struct WrapperStruct00 WrapperStruct00 = { 64, 4.5, 64.8, 64.4, 0.2, 10000, 1, 50, 8, 2, 100, 128, 23647, 32, 0, -50, 0, 0 }; VAL [WrapperStruct00={4:0}, isInitial=0] [L135] isInitial = 1 [L136] FCALL initially() [L138] FCALL updateLastVariables() [L139] CALL updateVariables() [L95] WrapperStruct00.var_1_2 = __VERIFIER_nondet_float() [L96] EXPR WrapperStruct00.var_1_2 [L96] EXPR WrapperStruct00.var_1_2 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_2 <= -1.0e-20F [L96] EXPR WrapperStruct00.var_1_2 [L96] EXPR WrapperStruct00.var_1_2 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_2 <= -1.0e-20F VAL [WrapperStruct00={4:0}, isInitial=1] [L96] EXPR (WrapperStruct00.var_1_2 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_2 <= -1.0e-20F) || (WrapperStruct00.var_1_2 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_2 >= 1.0e-20F ) VAL [WrapperStruct00={4:0}, isInitial=1] [L96] CALL assume_abort_if_not((WrapperStruct00.var_1_2 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_2 <= -1.0e-20F) || (WrapperStruct00.var_1_2 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_2 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L96] RET assume_abort_if_not((WrapperStruct00.var_1_2 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_2 <= -1.0e-20F) || (WrapperStruct00.var_1_2 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_2 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, isInitial=1] [L97] WrapperStruct00.var_1_3 = __VERIFIER_nondet_float() [L98] EXPR WrapperStruct00.var_1_3 [L98] EXPR WrapperStruct00.var_1_3 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_3 <= -1.0e-20F [L98] EXPR WrapperStruct00.var_1_3 [L98] EXPR WrapperStruct00.var_1_3 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_3 <= -1.0e-20F VAL [WrapperStruct00={4:0}, isInitial=1] [L98] EXPR (WrapperStruct00.var_1_3 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_3 <= -1.0e-20F) || (WrapperStruct00.var_1_3 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_3 >= 1.0e-20F ) VAL [WrapperStruct00={4:0}, isInitial=1] [L98] CALL assume_abort_if_not((WrapperStruct00.var_1_3 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_3 <= -1.0e-20F) || (WrapperStruct00.var_1_3 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_3 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L98] RET assume_abort_if_not((WrapperStruct00.var_1_3 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_3 <= -1.0e-20F) || (WrapperStruct00.var_1_3 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_3 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, isInitial=1] [L99] WrapperStruct00.var_1_4 = __VERIFIER_nondet_float() [L100] EXPR WrapperStruct00.var_1_4 [L100] EXPR WrapperStruct00.var_1_4 >= 0.0F && WrapperStruct00.var_1_4 <= -1.0e-20F [L100] EXPR WrapperStruct00.var_1_4 [L100] EXPR WrapperStruct00.var_1_4 >= 0.0F && WrapperStruct00.var_1_4 <= -1.0e-20F VAL [WrapperStruct00={4:0}, isInitial=1] [L100] EXPR (WrapperStruct00.var_1_4 >= 0.0F && WrapperStruct00.var_1_4 <= -1.0e-20F) || (WrapperStruct00.var_1_4 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_4 >= 1.0e-20F ) VAL [WrapperStruct00={4:0}, isInitial=1] [L100] CALL assume_abort_if_not((WrapperStruct00.var_1_4 >= 0.0F && WrapperStruct00.var_1_4 <= -1.0e-20F) || (WrapperStruct00.var_1_4 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_4 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L100] RET assume_abort_if_not((WrapperStruct00.var_1_4 >= 0.0F && WrapperStruct00.var_1_4 <= -1.0e-20F) || (WrapperStruct00.var_1_4 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_4 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, isInitial=1] [L101] WrapperStruct00.var_1_5 = __VERIFIER_nondet_float() [L102] EXPR WrapperStruct00.var_1_5 [L102] EXPR WrapperStruct00.var_1_5 >= 0.0F && WrapperStruct00.var_1_5 <= -1.0e-20F [L102] EXPR WrapperStruct00.var_1_5 [L102] EXPR WrapperStruct00.var_1_5 >= 0.0F && WrapperStruct00.var_1_5 <= -1.0e-20F VAL [WrapperStruct00={4:0}, isInitial=1] [L102] EXPR (WrapperStruct00.var_1_5 >= 0.0F && WrapperStruct00.var_1_5 <= -1.0e-20F) || (WrapperStruct00.var_1_5 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_5 >= 1.0e-20F ) VAL [WrapperStruct00={4:0}, isInitial=1] [L102] CALL assume_abort_if_not((WrapperStruct00.var_1_5 >= 0.0F && WrapperStruct00.var_1_5 <= -1.0e-20F) || (WrapperStruct00.var_1_5 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_5 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L102] RET assume_abort_if_not((WrapperStruct00.var_1_5 >= 0.0F && WrapperStruct00.var_1_5 <= -1.0e-20F) || (WrapperStruct00.var_1_5 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_5 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, isInitial=1] [L103] WrapperStruct00.var_1_7 = __VERIFIER_nondet_short() [L104] EXPR WrapperStruct00.var_1_7 VAL [WrapperStruct00={4:0}, isInitial=1] [L104] CALL assume_abort_if_not(WrapperStruct00.var_1_7 >= 8191) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L104] RET assume_abort_if_not(WrapperStruct00.var_1_7 >= 8191) VAL [WrapperStruct00={4:0}, isInitial=1] [L105] EXPR WrapperStruct00.var_1_7 VAL [WrapperStruct00={4:0}, isInitial=1] [L105] CALL assume_abort_if_not(WrapperStruct00.var_1_7 <= 16383) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L105] RET assume_abort_if_not(WrapperStruct00.var_1_7 <= 16383) VAL [WrapperStruct00={4:0}, isInitial=1] [L106] WrapperStruct00.var_1_8 = __VERIFIER_nondet_short() [L107] EXPR WrapperStruct00.var_1_8 VAL [WrapperStruct00={4:0}, isInitial=1] [L107] CALL assume_abort_if_not(WrapperStruct00.var_1_8 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L107] RET assume_abort_if_not(WrapperStruct00.var_1_8 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L108] EXPR WrapperStruct00.var_1_8 VAL [WrapperStruct00={4:0}, isInitial=1] [L108] CALL assume_abort_if_not(WrapperStruct00.var_1_8 <= 8192) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L108] RET assume_abort_if_not(WrapperStruct00.var_1_8 <= 8192) VAL [WrapperStruct00={4:0}, isInitial=1] [L109] WrapperStruct00.var_1_9 = __VERIFIER_nondet_short() [L110] EXPR WrapperStruct00.var_1_9 VAL [WrapperStruct00={4:0}, isInitial=1] [L110] CALL assume_abort_if_not(WrapperStruct00.var_1_9 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L110] RET assume_abort_if_not(WrapperStruct00.var_1_9 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L111] EXPR WrapperStruct00.var_1_9 VAL [WrapperStruct00={4:0}, isInitial=1] [L111] CALL assume_abort_if_not(WrapperStruct00.var_1_9 <= 8191) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L111] RET assume_abort_if_not(WrapperStruct00.var_1_9 <= 8191) VAL [WrapperStruct00={4:0}, isInitial=1] [L112] WrapperStruct00.var_1_10 = __VERIFIER_nondet_short() [L113] EXPR WrapperStruct00.var_1_10 VAL [WrapperStruct00={4:0}, isInitial=1] [L113] CALL assume_abort_if_not(WrapperStruct00.var_1_10 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L113] RET assume_abort_if_not(WrapperStruct00.var_1_10 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L114] EXPR WrapperStruct00.var_1_10 VAL [WrapperStruct00={4:0}, isInitial=1] [L114] CALL assume_abort_if_not(WrapperStruct00.var_1_10 <= 32766) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L114] RET assume_abort_if_not(WrapperStruct00.var_1_10 <= 32766) VAL [WrapperStruct00={4:0}, isInitial=1] [L115] WrapperStruct00.var_1_14 = __VERIFIER_nondet_uchar() [L116] EXPR WrapperStruct00.var_1_14 VAL [WrapperStruct00={4:0}, isInitial=1] [L116] CALL assume_abort_if_not(WrapperStruct00.var_1_14 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L116] RET assume_abort_if_not(WrapperStruct00.var_1_14 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L117] EXPR WrapperStruct00.var_1_14 VAL [WrapperStruct00={4:0}, isInitial=1] [L117] CALL assume_abort_if_not(WrapperStruct00.var_1_14 <= 254) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L117] RET assume_abort_if_not(WrapperStruct00.var_1_14 <= 254) VAL [WrapperStruct00={4:0}, isInitial=1] [L118] WrapperStruct00.var_1_16 = __VERIFIER_nondet_ushort() [L119] EXPR WrapperStruct00.var_1_16 VAL [WrapperStruct00={4:0}, isInitial=1] [L119] CALL assume_abort_if_not(WrapperStruct00.var_1_16 >= 16383) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L119] RET assume_abort_if_not(WrapperStruct00.var_1_16 >= 16383) VAL [WrapperStruct00={4:0}, isInitial=1] [L120] EXPR WrapperStruct00.var_1_16 VAL [WrapperStruct00={4:0}, isInitial=1] [L120] CALL assume_abort_if_not(WrapperStruct00.var_1_16 <= 32767) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L120] RET assume_abort_if_not(WrapperStruct00.var_1_16 <= 32767) VAL [WrapperStruct00={4:0}, isInitial=1] [L121] WrapperStruct00.var_1_19 = __VERIFIER_nondet_char() [L122] EXPR WrapperStruct00.var_1_19 VAL [WrapperStruct00={4:0}, isInitial=1] [L122] CALL assume_abort_if_not(WrapperStruct00.var_1_19 >= -127) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L122] RET assume_abort_if_not(WrapperStruct00.var_1_19 >= -127) VAL [WrapperStruct00={4:0}, isInitial=1] [L123] EXPR WrapperStruct00.var_1_19 VAL [WrapperStruct00={4:0}, isInitial=1] [L123] CALL assume_abort_if_not(WrapperStruct00.var_1_19 <= 126) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L123] RET assume_abort_if_not(WrapperStruct00.var_1_19 <= 126) VAL [WrapperStruct00={4:0}, isInitial=1] [L124] WrapperStruct00.var_1_21 = __VERIFIER_nondet_uchar() [L125] EXPR WrapperStruct00.var_1_21 VAL [WrapperStruct00={4:0}, isInitial=1] [L125] CALL assume_abort_if_not(WrapperStruct00.var_1_21 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L125] RET assume_abort_if_not(WrapperStruct00.var_1_21 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L126] EXPR WrapperStruct00.var_1_21 VAL [WrapperStruct00={4:0}, isInitial=1] [L126] CALL assume_abort_if_not(WrapperStruct00.var_1_21 <= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L126] RET assume_abort_if_not(WrapperStruct00.var_1_21 <= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L139] RET updateVariables() [L140] CALL step() [L66] EXPR WrapperStruct00.var_1_19 [L66] WrapperStruct00.var_1_18 = WrapperStruct00.var_1_19 [L67] EXPR WrapperStruct00.var_1_21 [L67] WrapperStruct00.var_1_20 = WrapperStruct00.var_1_21 [L68] EXPR WrapperStruct00.var_1_18 [L68] signed char stepLocal_1 = WrapperStruct00.var_1_18; [L69] EXPR WrapperStruct00.var_1_9 [L69] EXPR WrapperStruct00.var_1_7 [L69] signed long int stepLocal_0 = WrapperStruct00.var_1_9 / WrapperStruct00.var_1_7; [L70] EXPR WrapperStruct00.var_1_8 [L70] EXPR WrapperStruct00.var_1_10 VAL [WrapperStruct00={4:0}, isInitial=1, stepLocal_0=0, stepLocal_1=0] [L70] EXPR WrapperStruct00.var_1_8 << WrapperStruct00.var_1_10 VAL [WrapperStruct00={4:0}, isInitial=1, stepLocal_0=0, stepLocal_1=0] [L70] COND FALSE !(stepLocal_1 > (WrapperStruct00.var_1_8 << WrapperStruct00.var_1_10)) [L77] EXPR WrapperStruct00.var_1_7 [L77] EXPR WrapperStruct00.var_1_18 VAL [WrapperStruct00={4:0}, isInitial=1, stepLocal_0=0] [L77] EXPR WrapperStruct00.var_1_7 ^ WrapperStruct00.var_1_18 VAL [WrapperStruct00={4:0}, isInitial=1, stepLocal_0=0] [L77] signed long int stepLocal_2 = WrapperStruct00.var_1_7 ^ WrapperStruct00.var_1_18; [L78] EXPR WrapperStruct00.var_1_14 VAL [WrapperStruct00={4:0}, isInitial=1, stepLocal_0=0, stepLocal_2=8191] [L78] COND FALSE !(WrapperStruct00.var_1_14 >= stepLocal_2) [L81] EXPR WrapperStruct00.var_1_2 [L81] EXPR WrapperStruct00.var_1_3 [L81] EXPR WrapperStruct00.var_1_4 [L81] EXPR WrapperStruct00.var_1_5 VAL [WrapperStruct00={4:0}, isInitial=1, stepLocal_0=0] [L81] EXPR ((WrapperStruct00.var_1_3) > ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_3) : ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5)) [L81] EXPR WrapperStruct00.var_1_3 [L81] EXPR ((WrapperStruct00.var_1_3) > ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_3) : ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5)) VAL [WrapperStruct00={4:0}, isInitial=1, stepLocal_0=0] [L81] COND TRUE WrapperStruct00.var_1_2 != ((((WrapperStruct00.var_1_3) > ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_3) : ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5)))) [L82] WrapperStruct00.var_1_20 VAL [WrapperStruct00={4:0}, isInitial=1, stepLocal_0=0] [L82] COND FALSE !(WrapperStruct00.var_1_20) [L92] EXPR WrapperStruct00.var_1_1 [L92] WrapperStruct00.var_1_17 = WrapperStruct00.var_1_1 [L140] RET step() [L141] CALL, EXPR property() [L131] EXPR WrapperStruct00.var_1_2 [L131] EXPR WrapperStruct00.var_1_3 [L131] EXPR WrapperStruct00.var_1_4 [L131] EXPR WrapperStruct00.var_1_5 VAL [WrapperStruct00={4:0}, isInitial=1] [L131] EXPR ((WrapperStruct00.var_1_3) > ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_3) : ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5)) [L131] EXPR WrapperStruct00.var_1_3 [L131] EXPR ((WrapperStruct00.var_1_3) > ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_3) : ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5)) VAL [WrapperStruct00={4:0}, isInitial=1] [L131] EXPR (WrapperStruct00.var_1_2 != ((((WrapperStruct00.var_1_3) > ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_3) : ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))))) ? (WrapperStruct00.var_1_20 ? (WrapperStruct00.var_1_1 == ((signed short int) (((WrapperStruct00.var_1_7 - 32) + (WrapperStruct00.var_1_13 + WrapperStruct00.var_1_13)) - WrapperStruct00.var_1_13))) : 1) : (WrapperStruct00.var_1_20 ? (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_18)) : (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_13))) [L131] EXPR WrapperStruct00.var_1_20 VAL [WrapperStruct00={4:0}, isInitial=1] [L131] EXPR WrapperStruct00.var_1_20 ? (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_18)) : (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_13)) [L131] EXPR WrapperStruct00.var_1_1 [L131] EXPR WrapperStruct00.var_1_13 [L131] EXPR WrapperStruct00.var_1_20 ? (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_18)) : (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_13)) VAL [WrapperStruct00={4:0}, isInitial=1] [L131] EXPR (WrapperStruct00.var_1_2 != ((((WrapperStruct00.var_1_3) > ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_3) : ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))))) ? (WrapperStruct00.var_1_20 ? (WrapperStruct00.var_1_1 == ((signed short int) (((WrapperStruct00.var_1_7 - 32) + (WrapperStruct00.var_1_13 + WrapperStruct00.var_1_13)) - WrapperStruct00.var_1_13))) : 1) : (WrapperStruct00.var_1_20 ? (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_18)) : (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_13))) VAL [WrapperStruct00={4:0}, isInitial=1] [L131] EXPR ((WrapperStruct00.var_1_2 != ((((WrapperStruct00.var_1_3) > ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_3) : ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))))) ? (WrapperStruct00.var_1_20 ? (WrapperStruct00.var_1_1 == ((signed short int) (((WrapperStruct00.var_1_7 - 32) + (WrapperStruct00.var_1_13 + WrapperStruct00.var_1_13)) - WrapperStruct00.var_1_13))) : 1) : (WrapperStruct00.var_1_20 ? (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_18)) : (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_13)))) && ((WrapperStruct00.var_1_18 > (WrapperStruct00.var_1_8 << WrapperStruct00.var_1_10)) ? (((WrapperStruct00.var_1_9 / WrapperStruct00.var_1_7) > -25) ? (WrapperStruct00.var_1_13 == ((unsigned char) WrapperStruct00.var_1_14)) : (WrapperStruct00.var_1_13 == ((unsigned char) WrapperStruct00.var_1_14))) : 1) VAL [WrapperStruct00={4:0}, isInitial=1] [L131] EXPR (((WrapperStruct00.var_1_2 != ((((WrapperStruct00.var_1_3) > ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_3) : ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))))) ? (WrapperStruct00.var_1_20 ? (WrapperStruct00.var_1_1 == ((signed short int) (((WrapperStruct00.var_1_7 - 32) + (WrapperStruct00.var_1_13 + WrapperStruct00.var_1_13)) - WrapperStruct00.var_1_13))) : 1) : (WrapperStruct00.var_1_20 ? (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_18)) : (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_13)))) && ((WrapperStruct00.var_1_18 > (WrapperStruct00.var_1_8 << WrapperStruct00.var_1_10)) ? (((WrapperStruct00.var_1_9 / WrapperStruct00.var_1_7) > -25) ? (WrapperStruct00.var_1_13 == ((unsigned char) WrapperStruct00.var_1_14)) : (WrapperStruct00.var_1_13 == ((unsigned char) WrapperStruct00.var_1_14))) : 1)) && ((WrapperStruct00.var_1_14 >= (WrapperStruct00.var_1_7 ^ WrapperStruct00.var_1_18)) ? (WrapperStruct00.var_1_15 == ((unsigned short int) (WrapperStruct00.var_1_14 + (WrapperStruct00.var_1_16 - WrapperStruct00.var_1_13)))) : 1) VAL [WrapperStruct00={4:0}, isInitial=1] [L131] EXPR ((((WrapperStruct00.var_1_2 != ((((WrapperStruct00.var_1_3) > ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_3) : ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))))) ? (WrapperStruct00.var_1_20 ? (WrapperStruct00.var_1_1 == ((signed short int) (((WrapperStruct00.var_1_7 - 32) + (WrapperStruct00.var_1_13 + WrapperStruct00.var_1_13)) - WrapperStruct00.var_1_13))) : 1) : (WrapperStruct00.var_1_20 ? (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_18)) : (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_13)))) && ((WrapperStruct00.var_1_18 > (WrapperStruct00.var_1_8 << WrapperStruct00.var_1_10)) ? (((WrapperStruct00.var_1_9 / WrapperStruct00.var_1_7) > -25) ? (WrapperStruct00.var_1_13 == ((unsigned char) WrapperStruct00.var_1_14)) : (WrapperStruct00.var_1_13 == ((unsigned char) WrapperStruct00.var_1_14))) : 1)) && ((WrapperStruct00.var_1_14 >= (WrapperStruct00.var_1_7 ^ WrapperStruct00.var_1_18)) ? (WrapperStruct00.var_1_15 == ((unsigned short int) (WrapperStruct00.var_1_14 + (WrapperStruct00.var_1_16 - WrapperStruct00.var_1_13)))) : 1)) && (WrapperStruct00.var_1_17 == ((unsigned short int) WrapperStruct00.var_1_1)) VAL [WrapperStruct00={4:0}, isInitial=1] [L131] EXPR (((((WrapperStruct00.var_1_2 != ((((WrapperStruct00.var_1_3) > ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_3) : ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))))) ? (WrapperStruct00.var_1_20 ? (WrapperStruct00.var_1_1 == ((signed short int) (((WrapperStruct00.var_1_7 - 32) + (WrapperStruct00.var_1_13 + WrapperStruct00.var_1_13)) - WrapperStruct00.var_1_13))) : 1) : (WrapperStruct00.var_1_20 ? (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_18)) : (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_13)))) && ((WrapperStruct00.var_1_18 > (WrapperStruct00.var_1_8 << WrapperStruct00.var_1_10)) ? (((WrapperStruct00.var_1_9 / WrapperStruct00.var_1_7) > -25) ? (WrapperStruct00.var_1_13 == ((unsigned char) WrapperStruct00.var_1_14)) : (WrapperStruct00.var_1_13 == ((unsigned char) WrapperStruct00.var_1_14))) : 1)) && ((WrapperStruct00.var_1_14 >= (WrapperStruct00.var_1_7 ^ WrapperStruct00.var_1_18)) ? (WrapperStruct00.var_1_15 == ((unsigned short int) (WrapperStruct00.var_1_14 + (WrapperStruct00.var_1_16 - WrapperStruct00.var_1_13)))) : 1)) && (WrapperStruct00.var_1_17 == ((unsigned short int) WrapperStruct00.var_1_1))) && (WrapperStruct00.var_1_18 == ((signed char) WrapperStruct00.var_1_19)) VAL [WrapperStruct00={4:0}, isInitial=1] [L131] EXPR ((((((WrapperStruct00.var_1_2 != ((((WrapperStruct00.var_1_3) > ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_3) : ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))))) ? (WrapperStruct00.var_1_20 ? (WrapperStruct00.var_1_1 == ((signed short int) (((WrapperStruct00.var_1_7 - 32) + (WrapperStruct00.var_1_13 + WrapperStruct00.var_1_13)) - WrapperStruct00.var_1_13))) : 1) : (WrapperStruct00.var_1_20 ? (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_18)) : (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_13)))) && ((WrapperStruct00.var_1_18 > (WrapperStruct00.var_1_8 << WrapperStruct00.var_1_10)) ? (((WrapperStruct00.var_1_9 / WrapperStruct00.var_1_7) > -25) ? (WrapperStruct00.var_1_13 == ((unsigned char) WrapperStruct00.var_1_14)) : (WrapperStruct00.var_1_13 == ((unsigned char) WrapperStruct00.var_1_14))) : 1)) && ((WrapperStruct00.var_1_14 >= (WrapperStruct00.var_1_7 ^ WrapperStruct00.var_1_18)) ? (WrapperStruct00.var_1_15 == ((unsigned short int) (WrapperStruct00.var_1_14 + (WrapperStruct00.var_1_16 - WrapperStruct00.var_1_13)))) : 1)) && (WrapperStruct00.var_1_17 == ((unsigned short int) WrapperStruct00.var_1_1))) && (WrapperStruct00.var_1_18 == ((signed char) WrapperStruct00.var_1_19))) && (WrapperStruct00.var_1_20 == ((unsigned char) WrapperStruct00.var_1_21)) VAL [WrapperStruct00={4:0}, isInitial=1] [L131-L132] return ((((((WrapperStruct00.var_1_2 != ((((WrapperStruct00.var_1_3) > ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_3) : ((WrapperStruct00.var_1_4 - WrapperStruct00.var_1_5))))) ? (WrapperStruct00.var_1_20 ? (WrapperStruct00.var_1_1 == ((signed short int) (((WrapperStruct00.var_1_7 - 32) + (WrapperStruct00.var_1_13 + WrapperStruct00.var_1_13)) - WrapperStruct00.var_1_13))) : 1) : (WrapperStruct00.var_1_20 ? (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_18)) : (WrapperStruct00.var_1_1 == ((signed short int) WrapperStruct00.var_1_13)))) && ((WrapperStruct00.var_1_18 > (WrapperStruct00.var_1_8 << WrapperStruct00.var_1_10)) ? (((WrapperStruct00.var_1_9 / WrapperStruct00.var_1_7) > -25) ? (WrapperStruct00.var_1_13 == ((unsigned char) WrapperStruct00.var_1_14)) : (WrapperStruct00.var_1_13 == ((unsigned char) WrapperStruct00.var_1_14))) : 1)) && ((WrapperStruct00.var_1_14 >= (WrapperStruct00.var_1_7 ^ WrapperStruct00.var_1_18)) ? (WrapperStruct00.var_1_15 == ((unsigned short int) (WrapperStruct00.var_1_14 + (WrapperStruct00.var_1_16 - WrapperStruct00.var_1_13)))) : 1)) && (WrapperStruct00.var_1_17 == ((unsigned short int) WrapperStruct00.var_1_1))) && (WrapperStruct00.var_1_18 == ((signed char) WrapperStruct00.var_1_19))) && (WrapperStruct00.var_1_20 == ((unsigned char) WrapperStruct00.var_1_21)) ; [L141] RET, EXPR property() [L141] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [WrapperStruct00={4:0}, isInitial=1] [L19] reach_error() VAL [WrapperStruct00={4:0}, isInitial=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 126 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 41.2s, OverallIterations: 17, TraceHistogramMax: 20, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2265 SdHoareTripleChecker+Valid, 11.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2241 mSDsluCounter, 9680 SdHoareTripleChecker+Invalid, 10.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7158 mSDsCounter, 482 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5344 IncrementalHoareTripleChecker+Invalid, 5826 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 482 mSolverCounterUnsat, 2522 mSDtfsCounter, 5344 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1207 GetRequests, 1072 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=508occurred in iteration=14, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 16 MinimizatonAttempts, 953 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 4.1s SatisfiabilityAnalysisTime, 17.1s InterpolantComputationTime, 3708 NumberOfCodeBlocks, 3708 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 3685 ConstructedInterpolants, 0 QuantifiedInterpolants, 8249 SizeOfPredicates, 9 NumberOfNonLiveVariables, 2497 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 22 InterpolantComputations, 14 PerfectInterpolantSequences, 16391/16720 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 18:32:40,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-43.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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_3f33e295-b6e4-426d-820c-2446af852c84/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 3866fcabc53f8729ce5445d739af818fee4df02a7fd7be02b76364ea8cb9d346 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:32:44,142 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:32:44,295 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-23 18:32:44,307 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:32:44,310 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:32:44,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:32:44,362 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:32:44,363 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:32:44,364 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:32:44,364 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:32:44,364 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:32:44,365 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:32:44,365 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:32:44,366 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:32:44,366 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:32:44,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:32:44,368 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:32:44,368 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:32:44,368 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:32:44,368 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:32:44,369 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:32:44,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:32:44,369 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:32:44,369 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 18:32:44,369 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-23 18:32:44,369 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-23 18:32:44,369 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:32:44,370 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:32:44,370 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:32:44,370 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:32:44,370 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:32:44,370 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:32:44,370 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:32:44,370 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:32:44,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:32:44,371 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:32:44,371 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:32:44,371 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:32:44,371 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:32:44,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:32:44,371 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:32:44,371 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:32:44,371 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:32:44,371 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:32:44,371 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-23 18:32:44,371 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-23 18:32:44,372 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:32:44,372 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:32:44,372 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:32:44,372 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:32:44,372 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_3f33e295-b6e4-426d-820c-2446af852c84/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 -> 3866fcabc53f8729ce5445d739af818fee4df02a7fd7be02b76364ea8cb9d346 [2024-11-23 18:32:44,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:32:44,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:32:44,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:32:44,802 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:32:44,802 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:32:44,804 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-43.i [2024-11-23 18:32:48,345 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/data/7a3467eeb/714cd01c9f8e45bd9ed84a8d451e48d9/FLAGd88196b1a [2024-11-23 18:32:48,621 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:32:48,622 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-43.i [2024-11-23 18:32:48,630 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/data/7a3467eeb/714cd01c9f8e45bd9ed84a8d451e48d9/FLAGd88196b1a [2024-11-23 18:32:48,918 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/data/7a3467eeb/714cd01c9f8e45bd9ed84a8d451e48d9 [2024-11-23 18:32:48,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:32:48,923 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:32:48,925 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:32:48,925 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:32:48,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:32:48,932 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:32:48" (1/1) ... [2024-11-23 18:32:48,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2161215e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:48, skipping insertion in model container [2024-11-23 18:32:48,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:32:48" (1/1) ... [2024-11-23 18:32:48,957 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:32:49,186 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_3f33e295-b6e4-426d-820c-2446af852c84/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-43.i[916,929] [2024-11-23 18:32:49,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:32:49,303 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:32:49,318 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_3f33e295-b6e4-426d-820c-2446af852c84/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-43.i[916,929] [2024-11-23 18:32:49,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:32:49,411 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:32:49,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:49 WrapperNode [2024-11-23 18:32:49,412 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:32:49,414 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:32:49,414 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:32:49,414 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:32:49,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:49" (1/1) ... [2024-11-23 18:32:49,459 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:49" (1/1) ... [2024-11-23 18:32:49,533 INFO L138 Inliner]: procedures = 34, calls = 176, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 499 [2024-11-23 18:32:49,537 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:32:49,538 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:32:49,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:32:49,538 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:32:49,559 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:49" (1/1) ... [2024-11-23 18:32:49,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:49" (1/1) ... [2024-11-23 18:32:49,572 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:49" (1/1) ... [2024-11-23 18:32:49,615 INFO L175 MemorySlicer]: Split 145 memory accesses to 2 slices as follows [2, 143]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 40 writes are split as follows [0, 40]. [2024-11-23 18:32:49,619 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:49" (1/1) ... [2024-11-23 18:32:49,620 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:49" (1/1) ... [2024-11-23 18:32:49,665 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:49" (1/1) ... [2024-11-23 18:32:49,670 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:49" (1/1) ... [2024-11-23 18:32:49,681 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:49" (1/1) ... [2024-11-23 18:32:49,687 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:49" (1/1) ... [2024-11-23 18:32:49,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:49" (1/1) ... [2024-11-23 18:32:49,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:32:49,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:32:49,711 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:32:49,711 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:32:49,713 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:49" (1/1) ... [2024-11-23 18:32:49,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:32:49,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:32:49,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:32:49,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:32:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:32:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-23 18:32:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-23 18:32:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-23 18:32:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-23 18:32:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2024-11-23 18:32:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2024-11-23 18:32:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2024-11-23 18:32:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2024-11-23 18:32:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2024-11-23 18:32:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2024-11-23 18:32:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2#0 [2024-11-23 18:32:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2#1 [2024-11-23 18:32:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2024-11-23 18:32:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2024-11-23 18:32:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 18:32:49,792 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 18:32:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#0 [2024-11-23 18:32:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#1 [2024-11-23 18:32:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:32:49,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:32:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-23 18:32:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-23 18:32:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2024-11-23 18:32:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2024-11-23 18:32:49,955 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:32:49,957 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:32:52,278 INFO L? ?]: Removed 119 outVars from TransFormulas that were not future-live. [2024-11-23 18:32:52,278 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:32:52,302 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:32:52,302 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 18:32:52,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:32:52 BoogieIcfgContainer [2024-11-23 18:32:52,303 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:32:52,306 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:32:52,306 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:32:52,313 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:32:52,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:32:48" (1/3) ... [2024-11-23 18:32:52,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40827715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:32:52, skipping insertion in model container [2024-11-23 18:32:52,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:32:49" (2/3) ... [2024-11-23 18:32:52,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40827715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:32:52, skipping insertion in model container [2024-11-23 18:32:52,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:32:52" (3/3) ... [2024-11-23 18:32:52,316 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-43.i [2024-11-23 18:32:52,332 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:32:52,334 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-s_file-43.i that has 2 procedures, 113 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 18:32:52,419 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:32:52,440 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;@3ccc59a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:32:52,440 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:32:52,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 90 states have (on average 1.4) internal successors, (126), 91 states have internal predecessors, (126), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-23 18:32:52,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-23 18:32:52,465 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:52,466 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:52,466 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:52,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:52,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1561133314, now seen corresponding path program 1 times [2024-11-23 18:32:52,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:32:52,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297425888] [2024-11-23 18:32:52,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:52,496 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 18:32:52,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:32:52,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:32:52,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:32:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:53,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 18:32:53,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:32:53,310 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 350 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-11-23 18:32:53,310 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:32:53,311 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:32:53,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297425888] [2024-11-23 18:32:53,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297425888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:53,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:53,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 18:32:53,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065328053] [2024-11-23 18:32:53,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:53,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 18:32:53,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:32:53,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 18:32:53,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:32:53,358 INFO L87 Difference]: Start difference. First operand has 113 states, 90 states have (on average 1.4) internal successors, (126), 91 states have internal predecessors, (126), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:53,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:53,398 INFO L93 Difference]: Finished difference Result 219 states and 346 transitions. [2024-11-23 18:32:53,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 18:32:53,401 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 165 [2024-11-23 18:32:53,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:53,410 INFO L225 Difference]: With dead ends: 219 [2024-11-23 18:32:53,410 INFO L226 Difference]: Without dead ends: 109 [2024-11-23 18:32:53,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 164 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 18:32:53,419 INFO L435 NwaCegarLoop]: 159 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, 159 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 18:32:53,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:32:53,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-23 18:32:53,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-23 18:32:53,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 87 states have (on average 1.367816091954023) internal successors, (119), 87 states have internal predecessors, (119), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-23 18:32:53,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2024-11-23 18:32:53,489 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 165 [2024-11-23 18:32:53,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:53,490 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2024-11-23 18:32:53,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:53,490 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2024-11-23 18:32:53,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-23 18:32:53,494 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:53,495 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:53,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:32:53,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:32:53,696 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:53,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:53,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1953213538, now seen corresponding path program 1 times [2024-11-23 18:32:53,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:32:53,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125200073] [2024-11-23 18:32:53,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:53,699 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 18:32:53,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:32:53,702 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:32:53,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:32:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:54,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 18:32:54,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:32:54,509 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:32:54,509 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:32:54,509 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:32:54,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125200073] [2024-11-23 18:32:54,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125200073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:54,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:54,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:32:54,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441831123] [2024-11-23 18:32:54,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:54,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:32:54,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:32:54,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:32:54,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:32:54,514 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:32:54,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:54,634 INFO L93 Difference]: Finished difference Result 220 states and 322 transitions. [2024-11-23 18:32:54,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:32:54,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 165 [2024-11-23 18:32:54,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:54,640 INFO L225 Difference]: With dead ends: 220 [2024-11-23 18:32:54,640 INFO L226 Difference]: Without dead ends: 114 [2024-11-23 18:32:54,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:32:54,645 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 1 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:54,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 600 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:32:54,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-23 18:32:54,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2024-11-23 18:32:54,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 91 states have (on average 1.3516483516483517) internal successors, (123), 91 states have internal predecessors, (123), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-23 18:32:54,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 163 transitions. [2024-11-23 18:32:54,670 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 163 transitions. Word has length 165 [2024-11-23 18:32:54,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:54,672 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 163 transitions. [2024-11-23 18:32:54,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:32:54,673 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 163 transitions. [2024-11-23 18:32:54,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-23 18:32:54,676 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:54,676 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:54,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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)] Forceful destruction successful, exit code 0 [2024-11-23 18:32:54,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:32:54,877 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:54,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:54,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1661695388, now seen corresponding path program 1 times [2024-11-23 18:32:54,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:32:54,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007166290] [2024-11-23 18:32:54,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:54,879 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 18:32:54,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:32:54,881 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:32:54,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:32:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:55,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:32:55,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:32:55,623 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:32:55,626 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:32:55,626 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:32:55,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007166290] [2024-11-23 18:32:55,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007166290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:55,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:55,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 18:32:55,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027171264] [2024-11-23 18:32:55,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:55,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:32:55,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:32:55,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:32:55,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:55,629 INFO L87 Difference]: Start difference. First operand 113 states and 163 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:32:55,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:55,815 INFO L93 Difference]: Finished difference Result 226 states and 327 transitions. [2024-11-23 18:32:55,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:32:55,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 165 [2024-11-23 18:32:55,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:55,818 INFO L225 Difference]: With dead ends: 226 [2024-11-23 18:32:55,821 INFO L226 Difference]: Without dead ends: 116 [2024-11-23 18:32:55,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:55,823 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 1 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:55,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 740 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:32:55,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-23 18:32:55,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2024-11-23 18:32:55,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 93 states have (on average 1.3440860215053763) internal successors, (125), 93 states have internal predecessors, (125), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-23 18:32:55,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 165 transitions. [2024-11-23 18:32:55,838 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 165 transitions. Word has length 165 [2024-11-23 18:32:55,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:55,839 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 165 transitions. [2024-11-23 18:32:55,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:32:55,839 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 165 transitions. [2024-11-23 18:32:55,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-23 18:32:55,859 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:55,859 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:55,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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)] Ended with exit code 0 [2024-11-23 18:32:56,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:32:56,060 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:56,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:56,061 INFO L85 PathProgramCache]: Analyzing trace with hash 113311974, now seen corresponding path program 1 times [2024-11-23 18:32:56,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:32:56,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045667297] [2024-11-23 18:32:56,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:56,063 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 18:32:56,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:32:56,066 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:32:56,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:32:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:56,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 18:32:56,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:32:57,000 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 95 treesize of output 41 [2024-11-23 18:32:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2024-11-23 18:32:57,067 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:32:57,067 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:32:57,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045667297] [2024-11-23 18:32:57,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045667297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:57,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:57,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:32:57,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601962774] [2024-11-23 18:32:57,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:57,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:32:57,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:32:57,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:32:57,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:32:57,072 INFO L87 Difference]: Start difference. First operand 115 states and 165 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:59,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:59,226 INFO L93 Difference]: Finished difference Result 228 states and 328 transitions. [2024-11-23 18:32:59,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:32:59,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 165 [2024-11-23 18:32:59,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:59,228 INFO L225 Difference]: With dead ends: 228 [2024-11-23 18:32:59,228 INFO L226 Difference]: Without dead ends: 116 [2024-11-23 18:32:59,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:32:59,232 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 139 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:59,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 460 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-23 18:32:59,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-23 18:32:59,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2024-11-23 18:32:59,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 93 states have (on average 1.3333333333333333) internal successors, (124), 93 states have internal predecessors, (124), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-23 18:32:59,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 164 transitions. [2024-11-23 18:32:59,244 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 164 transitions. Word has length 165 [2024-11-23 18:32:59,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:59,245 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 164 transitions. [2024-11-23 18:32:59,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:32:59,246 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 164 transitions. [2024-11-23 18:32:59,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-23 18:32:59,248 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:59,249 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:59,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:32:59,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:32:59,450 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:59,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:59,450 INFO L85 PathProgramCache]: Analyzing trace with hash -709761824, now seen corresponding path program 1 times [2024-11-23 18:32:59,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:32:59,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806275342] [2024-11-23 18:32:59,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:59,451 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 18:32:59,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:32:59,454 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:32:59,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:33:00,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 18:33:00,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:33:00,271 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 95 treesize of output 41 [2024-11-23 18:33:00,347 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2024-11-23 18:33:00,348 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:33:00,348 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:33:00,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806275342] [2024-11-23 18:33:00,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806275342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:33:00,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:33:00,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:33:00,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748211287] [2024-11-23 18:33:00,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:33:00,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:33:00,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:33:00,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:33:00,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:33:00,351 INFO L87 Difference]: Start difference. First operand 115 states and 164 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:33:02,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:33:02,342 INFO L93 Difference]: Finished difference Result 228 states and 326 transitions. [2024-11-23 18:33:02,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:33:02,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 167 [2024-11-23 18:33:02,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:33:02,344 INFO L225 Difference]: With dead ends: 228 [2024-11-23 18:33:02,345 INFO L226 Difference]: Without dead ends: 116 [2024-11-23 18:33:02,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:33:02,346 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 129 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-23 18:33:02,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 456 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-23 18:33:02,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-23 18:33:02,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2024-11-23 18:33:02,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 93 states have (on average 1.3225806451612903) internal successors, (123), 93 states have internal predecessors, (123), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-23 18:33:02,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 163 transitions. [2024-11-23 18:33:02,360 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 163 transitions. Word has length 167 [2024-11-23 18:33:02,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:33:02,362 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 163 transitions. [2024-11-23 18:33:02,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:33:02,363 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 163 transitions. [2024-11-23 18:33:02,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:33:02,368 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:33:02,368 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:02,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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)] Ended with exit code 0 [2024-11-23 18:33:02,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:02,569 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:33:02,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:33:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1995820070, now seen corresponding path program 1 times [2024-11-23 18:33:02,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:33:02,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420165633] [2024-11-23 18:33:02,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:33:02,570 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 18:33:02,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:33:02,575 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:02,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:33:03,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 18:33:03,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:33:03,474 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:03,474 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 46 [2024-11-23 18:33:03,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:03,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 89 treesize of output 100 [2024-11-23 18:33:03,958 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:03,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 95 treesize of output 35 [2024-11-23 18:33:04,063 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-23 18:33:04,063 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:33:04,064 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:33:04,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420165633] [2024-11-23 18:33:04,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420165633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:33:04,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:33:04,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 18:33:04,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478752121] [2024-11-23 18:33:04,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:33:04,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 18:33:04,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:33:04,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 18:33:04,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:33:04,067 INFO L87 Difference]: Start difference. First operand 115 states and 163 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 9 states have internal predecessors, (75), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:33:13,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:33:13,681 INFO L93 Difference]: Finished difference Result 386 states and 543 transitions. [2024-11-23 18:33:13,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-23 18:33:13,682 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 9 states have internal predecessors, (75), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 169 [2024-11-23 18:33:13,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:33:13,684 INFO L225 Difference]: With dead ends: 386 [2024-11-23 18:33:13,684 INFO L226 Difference]: Without dead ends: 274 [2024-11-23 18:33:13,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-11-23 18:33:13,686 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 346 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-23 18:33:13,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 515 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2024-11-23 18:33:13,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-23 18:33:13,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 264. [2024-11-23 18:33:13,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 211 states have (on average 1.3080568720379147) internal successors, (276), 213 states have internal predecessors, (276), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-23 18:33:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 372 transitions. [2024-11-23 18:33:13,738 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 372 transitions. Word has length 169 [2024-11-23 18:33:13,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:33:13,739 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 372 transitions. [2024-11-23 18:33:13,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 9 states have internal predecessors, (75), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:33:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 372 transitions. [2024-11-23 18:33:13,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:33:13,742 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:33:13,742 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:13,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:13,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:13,943 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:33:13,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:33:13,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1876445400, now seen corresponding path program 1 times [2024-11-23 18:33:13,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:33:13,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956469597] [2024-11-23 18:33:13,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:33:13,944 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 18:33:13,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:33:13,947 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:13,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:33:14,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 18:33:14,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:33:14,792 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:14,792 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 46 [2024-11-23 18:33:14,967 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:14,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 89 treesize of output 100 [2024-11-23 18:33:15,264 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:15,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 105 treesize of output 113 [2024-11-23 18:33:15,458 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:15,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 120 treesize of output 127 [2024-11-23 18:33:15,825 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:15,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 131 treesize of output 49 [2024-11-23 18:33:15,917 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-23 18:33:15,918 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:33:15,918 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:33:15,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956469597] [2024-11-23 18:33:15,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956469597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:33:15,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:33:15,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 18:33:15,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069909719] [2024-11-23 18:33:15,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:33:15,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 18:33:15,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:33:15,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 18:33:15,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:33:15,921 INFO L87 Difference]: Start difference. First operand 264 states and 372 transitions. Second operand has 11 states, 10 states have (on average 7.5) internal successors, (75), 11 states have internal predecessors, (75), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:33:28,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:33:28,763 INFO L93 Difference]: Finished difference Result 568 states and 790 transitions. [2024-11-23 18:33:28,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-23 18:33:28,765 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.5) internal successors, (75), 11 states have internal predecessors, (75), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 169 [2024-11-23 18:33:28,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:33:28,767 INFO L225 Difference]: With dead ends: 568 [2024-11-23 18:33:28,767 INFO L226 Difference]: Without dead ends: 360 [2024-11-23 18:33:28,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2024-11-23 18:33:28,769 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 520 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2024-11-23 18:33:28,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 660 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2024-11-23 18:33:28,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-23 18:33:28,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 264. [2024-11-23 18:33:28,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 211 states have (on average 1.2985781990521328) internal successors, (274), 213 states have internal predecessors, (274), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-23 18:33:28,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 370 transitions. [2024-11-23 18:33:28,801 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 370 transitions. Word has length 169 [2024-11-23 18:33:28,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:33:28,802 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 370 transitions. [2024-11-23 18:33:28,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.5) internal successors, (75), 11 states have internal predecessors, (75), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:33:28,802 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 370 transitions. [2024-11-23 18:33:28,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:33:28,804 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:33:28,805 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:28,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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)] Forceful destruction successful, exit code 0 [2024-11-23 18:33:29,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:29,009 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:33:29,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:33:29,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1397453542, now seen corresponding path program 1 times [2024-11-23 18:33:29,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:33:29,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704068513] [2024-11-23 18:33:29,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:33:29,010 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 18:33:29,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:33:29,012 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:29,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:33:29,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-23 18:33:29,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:33:29,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:33:29,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 91 [2024-11-23 18:33:30,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:30,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 110 treesize of output 118 [2024-11-23 18:33:30,685 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:30,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 110 treesize of output 118 [2024-11-23 18:33:31,233 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:31,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 110 treesize of output 118 [2024-11-23 18:33:32,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:32,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 110 treesize of output 118 [2024-11-23 18:33:32,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:32,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 105 treesize of output 119 [2024-11-23 18:33:33,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:33,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 110 treesize of output 109 [2024-11-23 18:33:34,273 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:34,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 95 treesize of output 115 [2024-11-23 18:33:35,041 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:35,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 105 treesize of output 119 [2024-11-23 18:33:35,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:35,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 105 treesize of output 119 [2024-11-23 18:33:36,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:36,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 105 treesize of output 128 [2024-11-23 18:33:37,669 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:37,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 120 treesize of output 122 [2024-11-23 18:33:38,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:38,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 110 treesize of output 109 [2024-11-23 18:33:39,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:39,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 113 treesize of output 107 [2024-11-23 18:33:39,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:39,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 121 treesize of output 123 [2024-11-23 18:33:39,672 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:39,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 127 treesize of output 138 [2024-11-23 18:33:39,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:39,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 142 treesize of output 152 [2024-11-23 18:33:40,509 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:40,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 179 treesize of output 85 [2024-11-23 18:33:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 32 proven. 672 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-23 18:33:40,766 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:33:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:33:41,160 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:33:41,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704068513] [2024-11-23 18:33:41,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704068513] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 18:33:41,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:33:41,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 21 [2024-11-23 18:33:41,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352999849] [2024-11-23 18:33:41,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:33:41,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:33:41,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:33:41,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:33:41,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-11-23 18:33:41,163 INFO L87 Difference]: Start difference. First operand 264 states and 370 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:33:44,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:33:44,092 INFO L93 Difference]: Finished difference Result 684 states and 952 transitions. [2024-11-23 18:33:44,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:33:44,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 169 [2024-11-23 18:33:44,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:33:44,096 INFO L225 Difference]: With dead ends: 684 [2024-11-23 18:33:44,097 INFO L226 Difference]: Without dead ends: 476 [2024-11-23 18:33:44,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2024-11-23 18:33:44,098 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 132 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:33:44,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 895 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-23 18:33:44,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2024-11-23 18:33:44,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 471. [2024-11-23 18:33:44,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 382 states have (on average 1.301047120418848) internal successors, (497), 385 states have internal predecessors, (497), 80 states have call successors, (80), 8 states have call predecessors, (80), 8 states have return successors, (80), 77 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-23 18:33:44,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 657 transitions. [2024-11-23 18:33:44,158 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 657 transitions. Word has length 169 [2024-11-23 18:33:44,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:33:44,158 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 657 transitions. [2024-11-23 18:33:44,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:33:44,159 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 657 transitions. [2024-11-23 18:33:44,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:33:44,160 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:33:44,160 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:44,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:44,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:44,361 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:33:44,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:33:44,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1554554881, now seen corresponding path program 1 times [2024-11-23 18:33:44,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:33:44,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854697575] [2024-11-23 18:33:44,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:33:44,362 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 18:33:44,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:33:44,364 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:44,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:33:44,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 18:33:44,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:33:45,056 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:45,056 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 46 [2024-11-23 18:33:45,182 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:45,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 89 treesize of output 100 [2024-11-23 18:33:45,419 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:45,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 105 treesize of output 113 [2024-11-23 18:33:45,548 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:45,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 120 treesize of output 127 [2024-11-23 18:33:45,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:45,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 126 treesize of output 46 [2024-11-23 18:33:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-23 18:33:45,854 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:33:45,854 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:33:45,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854697575] [2024-11-23 18:33:45,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854697575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:33:45,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:33:45,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 18:33:45,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101359309] [2024-11-23 18:33:45,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:33:45,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 18:33:45,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:33:45,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 18:33:45,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:33:45,856 INFO L87 Difference]: Start difference. First operand 471 states and 657 transitions. Second operand has 11 states, 10 states have (on average 7.5) internal successors, (75), 11 states have internal predecessors, (75), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:33:56,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:33:56,141 INFO L93 Difference]: Finished difference Result 989 states and 1366 transitions. [2024-11-23 18:33:56,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-23 18:33:56,142 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.5) internal successors, (75), 11 states have internal predecessors, (75), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 169 [2024-11-23 18:33:56,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:33:56,144 INFO L225 Difference]: With dead ends: 989 [2024-11-23 18:33:56,145 INFO L226 Difference]: Without dead ends: 574 [2024-11-23 18:33:56,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2024-11-23 18:33:56,146 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 514 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2024-11-23 18:33:56,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 624 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2024-11-23 18:33:56,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2024-11-23 18:33:56,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 471. [2024-11-23 18:33:56,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 382 states have (on average 1.2905759162303665) internal successors, (493), 385 states have internal predecessors, (493), 80 states have call successors, (80), 8 states have call predecessors, (80), 8 states have return successors, (80), 77 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-23 18:33:56,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 653 transitions. [2024-11-23 18:33:56,209 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 653 transitions. Word has length 169 [2024-11-23 18:33:56,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:33:56,209 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 653 transitions. [2024-11-23 18:33:56,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.5) internal successors, (75), 11 states have internal predecessors, (75), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:33:56,210 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 653 transitions. [2024-11-23 18:33:56,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:33:56,211 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:33:56,211 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:56,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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)] Ended with exit code 0 [2024-11-23 18:33:56,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:56,411 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:33:56,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:33:56,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1719344061, now seen corresponding path program 1 times [2024-11-23 18:33:56,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:33:56,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716380171] [2024-11-23 18:33:56,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:33:56,413 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 18:33:56,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:33:56,414 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:56,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:33:56,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 18:33:56,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:33:56,890 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:33:56,890 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:33:56,890 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:33:56,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716380171] [2024-11-23 18:33:56,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716380171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:33:56,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:33:56,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:33:56,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99248163] [2024-11-23 18:33:56,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:33:56,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:33:56,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:33:56,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:33:56,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:33:56,891 INFO L87 Difference]: Start difference. First operand 471 states and 653 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:33:56,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:33:56,984 INFO L93 Difference]: Finished difference Result 886 states and 1226 transitions. [2024-11-23 18:33:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:33:56,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 169 [2024-11-23 18:33:56,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:33:56,988 INFO L225 Difference]: With dead ends: 886 [2024-11-23 18:33:56,989 INFO L226 Difference]: Without dead ends: 471 [2024-11-23 18:33:56,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:33:56,991 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 0 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:33:56,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 595 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:33:56,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2024-11-23 18:33:57,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 467. [2024-11-23 18:33:57,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 378 states have (on average 1.2883597883597884) internal successors, (487), 381 states have internal predecessors, (487), 80 states have call successors, (80), 8 states have call predecessors, (80), 8 states have return successors, (80), 77 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-23 18:33:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 647 transitions. [2024-11-23 18:33:57,052 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 647 transitions. Word has length 169 [2024-11-23 18:33:57,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:33:57,052 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 647 transitions. [2024-11-23 18:33:57,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:33:57,053 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 647 transitions. [2024-11-23 18:33:57,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:33:57,054 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:33:57,054 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:57,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:57,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:57,255 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:33:57,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:33:57,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1591474460, now seen corresponding path program 1 times [2024-11-23 18:33:57,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:33:57,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348215442] [2024-11-23 18:33:57,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:33:57,258 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 18:33:57,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:33:57,262 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:57,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:33:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:33:57,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 18:33:57,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:33:57,936 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:57,936 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 46 [2024-11-23 18:33:58,026 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:58,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 89 treesize of output 100 [2024-11-23 18:33:58,193 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:33:58,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 95 treesize of output 35 [2024-11-23 18:33:58,247 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-23 18:33:58,247 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:33:58,247 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:33:58,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348215442] [2024-11-23 18:33:58,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348215442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:33:58,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:33:58,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 18:33:58,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142797479] [2024-11-23 18:33:58,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:33:58,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 18:33:58,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:33:58,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 18:33:58,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:33:58,249 INFO L87 Difference]: Start difference. First operand 467 states and 647 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 9 states have internal predecessors, (75), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:34:05,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:34:05,737 INFO L93 Difference]: Finished difference Result 893 states and 1226 transitions. [2024-11-23 18:34:05,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-23 18:34:05,738 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 9 states have internal predecessors, (75), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 169 [2024-11-23 18:34:05,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:34:05,741 INFO L225 Difference]: With dead ends: 893 [2024-11-23 18:34:05,741 INFO L226 Difference]: Without dead ends: 482 [2024-11-23 18:34:05,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-11-23 18:34:05,743 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 340 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:34:05,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 509 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-23 18:34:05,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2024-11-23 18:34:05,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 467. [2024-11-23 18:34:05,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 378 states have (on average 1.2777777777777777) internal successors, (483), 381 states have internal predecessors, (483), 80 states have call successors, (80), 8 states have call predecessors, (80), 8 states have return successors, (80), 77 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-23 18:34:05,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 643 transitions. [2024-11-23 18:34:05,788 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 643 transitions. Word has length 169 [2024-11-23 18:34:05,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:34:05,788 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 643 transitions. [2024-11-23 18:34:05,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 9 states have internal predecessors, (75), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:34:05,789 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 643 transitions. [2024-11-23 18:34:05,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:34:05,792 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:34:05,792 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:34:05,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:34:05,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:34:05,993 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:34:05,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:34:05,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1168772634, now seen corresponding path program 1 times [2024-11-23 18:34:05,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:34:05,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711676783] [2024-11-23 18:34:05,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:34:05,994 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 18:34:05,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:34:05,996 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:34:05,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:34:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:34:06,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-23 18:34:06,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:34:06,741 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 18:34:06,787 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 18:34:07,184 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 80 treesize of output 34 [2024-11-23 18:34:07,382 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 80 treesize of output 34 [2024-11-23 18:34:07,587 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 80 treesize of output 34 [2024-11-23 18:34:07,824 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 75 treesize of output 44 [2024-11-23 18:34:08,168 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:34:08,168 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 85 treesize of output 57 [2024-11-23 18:34:08,596 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:34:08,596 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 95 treesize of output 70 [2024-11-23 18:34:09,121 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:34:09,121 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 110 treesize of output 73 [2024-11-23 18:34:09,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:34:09,529 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 110 treesize of output 73 [2024-11-23 18:34:09,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:34:09,918 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 105 treesize of output 83 [2024-11-23 18:34:10,480 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:34:10,480 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 120 treesize of output 86 [2024-11-23 18:34:10,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:34:10,992 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 133 treesize of output 97 [2024-11-23 18:34:11,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:34:11,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 161 treesize of output 148 [2024-11-23 18:34:16,749 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:34:16,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 258 treesize of output 206 [2024-11-23 18:34:22,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:34:22,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 333 treesize of output 125 [2024-11-23 18:34:30,050 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 628 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-23 18:34:30,051 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:34:30,051 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:34:30,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711676783] [2024-11-23 18:34:30,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711676783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:34:30,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:34:30,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-23 18:34:30,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530939376] [2024-11-23 18:34:30,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:34:30,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 18:34:30,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:34:30,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 18:34:30,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2024-11-23 18:34:30,052 INFO L87 Difference]: Start difference. First operand 467 states and 643 transitions. Second operand has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 18 states have internal predecessors, (87), 6 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-23 18:34:57,095 WARN L286 SmtUtils]: Spent 12.38s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 18:35:05,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:35:05,812 INFO L93 Difference]: Finished difference Result 1480 states and 1971 transitions. [2024-11-23 18:35:05,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-23 18:35:05,813 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 18 states have internal predecessors, (87), 6 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 169 [2024-11-23 18:35:05,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:35:05,819 INFO L225 Difference]: With dead ends: 1480 [2024-11-23 18:35:05,819 INFO L226 Difference]: Without dead ends: 1069 [2024-11-23 18:35:05,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2024-11-23 18:35:05,821 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 682 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2024-11-23 18:35:05,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 866 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 17.8s Time] [2024-11-23 18:35:05,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2024-11-23 18:35:05,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 938. [2024-11-23 18:35:05,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 761 states have (on average 1.2588699080157688) internal successors, (958), 770 states have internal predecessors, (958), 144 states have call successors, (144), 32 states have call predecessors, (144), 32 states have return successors, (144), 135 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 18:35:05,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1246 transitions. [2024-11-23 18:35:05,951 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1246 transitions. Word has length 169 [2024-11-23 18:35:05,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:35:05,952 INFO L471 AbstractCegarLoop]: Abstraction has 938 states and 1246 transitions. [2024-11-23 18:35:05,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 18 states have internal predecessors, (87), 6 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-23 18:35:05,952 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1246 transitions. [2024-11-23 18:35:05,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:35:05,954 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:35:05,954 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:05,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:35:06,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:35:06,155 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:35:06,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:35:06,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1132049956, now seen corresponding path program 1 times [2024-11-23 18:35:06,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:35:06,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291174974] [2024-11-23 18:35:06,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:35:06,156 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 18:35:06,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:35:06,157 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:35:06,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:35:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:35:34,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-23 18:35:34,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:35:34,124 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 18:35:34,484 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 80 treesize of output 34 [2024-11-23 18:35:35,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 65 [2024-11-23 18:35:38,446 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:35:38,446 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 196 treesize of output 96 [2024-11-23 18:35:39,150 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:35:39,150 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 191 treesize of output 106 [2024-11-23 18:35:40,228 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:35:40,229 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 201 treesize of output 119 [2024-11-23 18:35:41,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:35:41,540 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 211 treesize of output 132 [2024-11-23 18:35:43,019 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:35:43,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 226 treesize of output 135 [2024-11-23 18:35:44,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:35:44,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 226 treesize of output 135 [2024-11-23 18:35:45,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:35:45,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 226 treesize of output 135 [2024-11-23 18:35:46,122 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:35:46,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 221 treesize of output 145 [2024-11-23 18:35:47,752 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:35:47,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 249 treesize of output 168 [2024-11-23 18:35:48,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:35:48,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 277 treesize of output 219 [2024-11-23 18:36:04,661 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:36:04,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 282 treesize of output 230 [2024-11-23 18:36:16,939 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:36:16,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 359 treesize of output 127 [2024-11-23 18:36:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 536 proven. 96 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-23 18:36:19,784 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:36:37,682 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:36:37,682 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:36:37,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291174974] [2024-11-23 18:36:37,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291174974] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 18:36:37,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:36:37,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [32] total 36 [2024-11-23 18:36:37,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264350116] [2024-11-23 18:36:37,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:36:37,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:36:37,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:36:37,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:36:37,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260 [2024-11-23 18:36:37,684 INFO L87 Difference]: Start difference. First operand 938 states and 1246 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:36:39,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 18:36:43,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 18:36:47,798 WARN L539 Checker$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 [] [2024-11-23 18:37:07,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 18:37:12,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 18:37:26,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:37:26,345 INFO L93 Difference]: Finished difference Result 2108 states and 2781 transitions. [2024-11-23 18:37:26,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:37:26,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 169 [2024-11-23 18:37:26,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:37:26,362 INFO L225 Difference]: With dead ends: 2108 [2024-11-23 18:37:26,362 INFO L226 Difference]: Without dead ends: 1228 [2024-11-23 18:37:26,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 47.0s TimeCoverageRelationStatistics Valid=252, Invalid=1080, Unknown=0, NotChecked=0, Total=1332 [2024-11-23 18:37:26,366 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 84 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:37:26,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 412 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 4 Unknown, 0 Unchecked, 46.7s Time] [2024-11-23 18:37:26,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2024-11-23 18:37:26,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 968. [2024-11-23 18:37:26,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 791 states have (on average 1.2541087231352719) internal successors, (992), 800 states have internal predecessors, (992), 144 states have call successors, (144), 32 states have call predecessors, (144), 32 states have return successors, (144), 135 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 18:37:26,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1280 transitions. [2024-11-23 18:37:26,507 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1280 transitions. Word has length 169 [2024-11-23 18:37:26,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:37:26,507 INFO L471 AbstractCegarLoop]: Abstraction has 968 states and 1280 transitions. [2024-11-23 18:37:26,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:37:26,508 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1280 transitions. [2024-11-23 18:37:26,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:37:26,510 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:37:26,510 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:37:26,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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)] Ended with exit code 0 [2024-11-23 18:37:26,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:37:26,711 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:37:26,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:37:26,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1320756328, now seen corresponding path program 1 times [2024-11-23 18:37:26,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:37:26,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937417587] [2024-11-23 18:37:26,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:37:26,713 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 18:37:26,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:37:26,716 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:37:26,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:37:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:37:54,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-23 18:37:54,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:37:54,341 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 18:37:54,752 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 80 treesize of output 34 [2024-11-23 18:37:55,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 67 [2024-11-23 18:37:58,152 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:37:58,152 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 198 treesize of output 98 [2024-11-23 18:38:02,270 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:38:02,270 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 251 treesize of output 139 [2024-11-23 18:38:04,222 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:38:04,223 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 266 treesize of output 142 [2024-11-23 18:38:05,772 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:38:05,773 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 266 treesize of output 142 [2024-11-23 18:38:07,024 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:38:07,025 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 266 treesize of output 142 [2024-11-23 18:38:08,269 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:38:08,269 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 266 treesize of output 142 [2024-11-23 18:38:09,565 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:38:09,566 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 261 treesize of output 152 [2024-11-23 18:38:11,574 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:38:11,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 276 treesize of output 155 [2024-11-23 18:38:13,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:38:13,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 271 treesize of output 165 [2024-11-23 18:38:15,493 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:38:15,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 299 treesize of output 188 [2024-11-23 18:38:16,551 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:38:16,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 327 treesize of output 230 [2024-11-23 18:38:30,782 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:38:30,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 416 treesize of output 277 [2024-11-23 18:38:49,145 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 456 proven. 96 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-23 18:38:49,145 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:39:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:39:12,220 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:39:12,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937417587] [2024-11-23 18:39:12,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [937417587] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 18:39:12,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:39:12,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [35] total 40 [2024-11-23 18:39:12,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983645001] [2024-11-23 18:39:12,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:39:12,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:39:12,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:39:12,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:39:12,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=1269, Unknown=0, NotChecked=0, Total=1560 [2024-11-23 18:39:12,222 INFO L87 Difference]: Start difference. First operand 968 states and 1280 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:39:38,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.29s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 18:40:06,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:40:06,639 INFO L93 Difference]: Finished difference Result 2161 states and 2843 transitions. [2024-11-23 18:40:06,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:40:06,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 169 [2024-11-23 18:40:06,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:40:06,653 INFO L225 Difference]: With dead ends: 2161 [2024-11-23 18:40:06,654 INFO L226 Difference]: Without dead ends: 1251 [2024-11-23 18:40:06,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 57.1s TimeCoverageRelationStatistics Valid=304, Invalid=1418, Unknown=0, NotChecked=0, Total=1722 [2024-11-23 18:40:06,657 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 44 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:40:06,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 594 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 47.0s Time] [2024-11-23 18:40:06,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2024-11-23 18:40:06,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 990. [2024-11-23 18:40:06,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 813 states have (on average 1.2521525215252152) internal successors, (1018), 822 states have internal predecessors, (1018), 144 states have call successors, (144), 32 states have call predecessors, (144), 32 states have return successors, (144), 135 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 18:40:06,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1306 transitions. [2024-11-23 18:40:06,822 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1306 transitions. Word has length 169 [2024-11-23 18:40:06,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:40:06,822 INFO L471 AbstractCegarLoop]: Abstraction has 990 states and 1306 transitions. [2024-11-23 18:40:06,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:40:06,823 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1306 transitions. [2024-11-23 18:40:06,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:40:06,825 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:40:06,825 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:40:06,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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)] Ended with exit code 0 [2024-11-23 18:40:07,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:40:07,026 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:40:07,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:07,027 INFO L85 PathProgramCache]: Analyzing trace with hash -673388378, now seen corresponding path program 1 times [2024-11-23 18:40:07,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:40:07,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144660793] [2024-11-23 18:40:07,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:07,028 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 18:40:07,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:40:07,031 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:40:07,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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)] Waiting until timeout for monitored process [2024-11-23 18:40:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:20,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-23 18:40:20,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:40:20,714 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 18:40:21,198 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 80 treesize of output 34 [2024-11-23 18:40:21,409 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 80 treesize of output 34 [2024-11-23 18:40:22,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 65 [2024-11-23 18:40:26,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:40:26,215 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 191 treesize of output 106 [2024-11-23 18:40:27,536 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:40:27,537 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 201 treesize of output 119 [2024-11-23 18:40:29,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:40:29,159 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 211 treesize of output 132 [2024-11-23 18:40:30,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:40:30,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 221 treesize of output 145 [2024-11-23 18:40:32,717 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:40:32,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 236 treesize of output 148 [2024-11-23 18:40:33,939 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:40:33,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 231 treesize of output 158 [2024-11-23 18:40:36,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:40:36,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 241 treesize of output 171 [2024-11-23 18:40:38,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:40:38,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 251 treesize of output 184 [2024-11-23 18:40:40,834 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:40:40,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 279 treesize of output 198 [2024-11-23 18:40:42,092 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:40:42,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 307 treesize of output 240 [2024-11-23 18:41:04,537 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:41:04,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 396 treesize of output 287 [2024-11-23 18:41:23,522 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:41:23,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 468 treesize of output 176 [2024-11-23 18:41:26,951 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 612 proven. 96 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-23 18:41:26,951 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:41:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:41:46,312 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:41:46,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144660793] [2024-11-23 18:41:46,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144660793] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 18:41:46,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:41:46,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [37] total 43 [2024-11-23 18:41:46,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073678428] [2024-11-23 18:41:46,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:41:46,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:41:46,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:41:46,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:41:46,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=1451, Unknown=0, NotChecked=0, Total=1806 [2024-11-23 18:41:46,314 INFO L87 Difference]: Start difference. First operand 990 states and 1306 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:42:20,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:42:20,697 INFO L93 Difference]: Finished difference Result 2166 states and 2844 transitions. [2024-11-23 18:42:20,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:42:20,702 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 169 [2024-11-23 18:42:20,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:42:20,708 INFO L225 Difference]: With dead ends: 2166 [2024-11-23 18:42:20,708 INFO L226 Difference]: Without dead ends: 1234 [2024-11-23 18:42:20,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 60.1s TimeCoverageRelationStatistics Valid=381, Invalid=1689, Unknown=0, NotChecked=0, Total=2070 [2024-11-23 18:42:20,711 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 42 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:42:20,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 718 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 32.1s Time] [2024-11-23 18:42:20,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2024-11-23 18:42:20,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 995. [2024-11-23 18:42:20,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 818 states have (on average 1.2530562347188263) internal successors, (1025), 827 states have internal predecessors, (1025), 144 states have call successors, (144), 32 states have call predecessors, (144), 32 states have return successors, (144), 135 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 18:42:20,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1313 transitions. [2024-11-23 18:42:20,850 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1313 transitions. Word has length 169 [2024-11-23 18:42:20,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:42:20,851 INFO L471 AbstractCegarLoop]: Abstraction has 995 states and 1313 transitions. [2024-11-23 18:42:20,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:42:20,851 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1313 transitions. [2024-11-23 18:42:20,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 18:42:20,853 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:42:20,853 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:20,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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)] Ended with exit code 0 [2024-11-23 18:42:21,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:42:21,054 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:42:21,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:42:21,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1028224024, now seen corresponding path program 1 times [2024-11-23 18:42:21,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:42:21,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926266320] [2024-11-23 18:42:21,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:42:21,055 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 18:42:21,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:42:21,056 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:42:21,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:42:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:42:21,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-23 18:42:21,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:42:21,838 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 18:42:22,248 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 80 treesize of output 34 [2024-11-23 18:42:22,912 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:22,912 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 140 treesize of output 67 [2024-11-23 18:42:23,220 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:23,220 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 140 treesize of output 67 [2024-11-23 18:42:23,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:23,553 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 135 treesize of output 77 [2024-11-23 18:42:24,215 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:24,216 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 150 treesize of output 80 [2024-11-23 18:42:24,682 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:24,682 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 150 treesize of output 80 [2024-11-23 18:42:25,145 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:25,145 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 145 treesize of output 90 [2024-11-23 18:42:25,842 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:25,842 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 155 treesize of output 103 [2024-11-23 18:42:26,625 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:26,626 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 165 treesize of output 116 [2024-11-23 18:42:27,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:27,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 175 treesize of output 129 [2024-11-23 18:42:28,579 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:28,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 190 treesize of output 132 [2024-11-23 18:42:29,501 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:29,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 203 treesize of output 143 [2024-11-23 18:42:31,373 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:31,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 259 treesize of output 180 [2024-11-23 18:42:32,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:32,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 304 treesize of output 114 [2024-11-23 18:42:32,646 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 576 proven. 76 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-23 18:42:32,646 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:42:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:42:33,528 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:42:33,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926266320] [2024-11-23 18:42:33,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926266320] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 18:42:33,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:42:33,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22] total 28 [2024-11-23 18:42:33,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999088090] [2024-11-23 18:42:33,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:42:33,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:42:33,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:42:33,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:42:33,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2024-11-23 18:42:33,530 INFO L87 Difference]: Start difference. First operand 995 states and 1313 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:42:35,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:42:35,942 INFO L93 Difference]: Finished difference Result 2145 states and 2817 transitions. [2024-11-23 18:42:35,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:42:35,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 169 [2024-11-23 18:42:35,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:42:35,948 INFO L225 Difference]: With dead ends: 2145 [2024-11-23 18:42:35,949 INFO L226 Difference]: Without dead ends: 1208 [2024-11-23 18:42:35,951 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2024-11-23 18:42:35,951 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 77 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:42:35,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 619 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-23 18:42:35,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2024-11-23 18:42:36,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 974. [2024-11-23 18:42:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 797 states have (on average 1.2521957340025094) internal successors, (998), 806 states have internal predecessors, (998), 144 states have call successors, (144), 32 states have call predecessors, (144), 32 states have return successors, (144), 135 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 18:42:36,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1286 transitions. [2024-11-23 18:42:36,105 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1286 transitions. Word has length 169 [2024-11-23 18:42:36,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:42:36,108 INFO L471 AbstractCegarLoop]: Abstraction has 974 states and 1286 transitions. [2024-11-23 18:42:36,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:42:36,109 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1286 transitions. [2024-11-23 18:42:36,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-23 18:42:36,112 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:42:36,112 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:36,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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)] Forceful destruction successful, exit code 0 [2024-11-23 18:42:36,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:42:36,313 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:42:36,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:42:36,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1302799160, now seen corresponding path program 1 times [2024-11-23 18:42:36,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:42:36,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322066413] [2024-11-23 18:42:36,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:42:36,315 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 18:42:36,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:42:36,317 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:42:36,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:42:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:42:36,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 18:42:36,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:42:36,889 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:42:36,889 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:42:36,889 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:42:36,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322066413] [2024-11-23 18:42:36,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322066413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:42:36,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:42:36,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:42:36,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679921653] [2024-11-23 18:42:36,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:42:36,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:42:36,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:42:36,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:42:36,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:42:36,891 INFO L87 Difference]: Start difference. First operand 974 states and 1286 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:42:37,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:42:37,099 INFO L93 Difference]: Finished difference Result 1914 states and 2519 transitions. [2024-11-23 18:42:37,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:42:37,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 171 [2024-11-23 18:42:37,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:42:37,105 INFO L225 Difference]: With dead ends: 1914 [2024-11-23 18:42:37,105 INFO L226 Difference]: Without dead ends: 998 [2024-11-23 18:42:37,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:42:37,107 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:42:37,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 580 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:42:37,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-11-23 18:42:37,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 998. [2024-11-23 18:42:37,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 821 states have (on average 1.2448233861144946) internal successors, (1022), 830 states have internal predecessors, (1022), 144 states have call successors, (144), 32 states have call predecessors, (144), 32 states have return successors, (144), 135 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 18:42:37,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1310 transitions. [2024-11-23 18:42:37,249 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1310 transitions. Word has length 171 [2024-11-23 18:42:37,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:42:37,250 INFO L471 AbstractCegarLoop]: Abstraction has 998 states and 1310 transitions. [2024-11-23 18:42:37,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:42:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1310 transitions. [2024-11-23 18:42:37,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-23 18:42:37,253 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:42:37,253 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:37,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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)] Forceful destruction successful, exit code 0 [2024-11-23 18:42:37,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:42:37,453 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:42:37,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:42:37,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1020721405, now seen corresponding path program 1 times [2024-11-23 18:42:37,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:42:37,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426607420] [2024-11-23 18:42:37,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:42:37,455 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 18:42:37,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:42:37,457 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:42:37,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:42:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:42:38,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-23 18:42:38,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:42:38,419 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 18:42:38,932 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 47 treesize of output 34 [2024-11-23 18:42:39,787 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:39,787 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 68 treesize of output 52 [2024-11-23 18:42:40,386 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:40,387 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 83 treesize of output 55 [2024-11-23 18:42:40,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:40,940 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 78 treesize of output 65 [2024-11-23 18:42:41,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:41,636 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 88 treesize of output 78 [2024-11-23 18:42:42,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:42,368 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 76 treesize of output 81 [2024-11-23 18:42:43,222 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:43,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 91 treesize of output 84 [2024-11-23 18:42:44,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 95 [2024-11-23 18:42:45,352 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:45,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 179 treesize of output 160 [2024-11-23 18:42:46,449 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:46,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 144 treesize of output 164 [2024-11-23 18:42:47,079 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:47,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 159 treesize of output 178 [2024-11-23 18:42:48,603 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:48,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 190 treesize of output 90 [2024-11-23 18:42:48,960 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 563 proven. 117 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-23 18:42:48,961 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:42:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:42:50,153 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:42:50,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426607420] [2024-11-23 18:42:50,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426607420] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 18:42:50,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:42:50,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [27] total 32 [2024-11-23 18:42:50,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230749049] [2024-11-23 18:42:50,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:42:50,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:42:50,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:42:50,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:42:50,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2024-11-23 18:42:50,155 INFO L87 Difference]: Start difference. First operand 998 states and 1310 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:42:55,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:42:55,209 INFO L93 Difference]: Finished difference Result 2566 states and 3354 transitions. [2024-11-23 18:42:55,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:42:55,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 173 [2024-11-23 18:42:55,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:42:55,214 INFO L225 Difference]: With dead ends: 2566 [2024-11-23 18:42:55,214 INFO L226 Difference]: Without dead ends: 1626 [2024-11-23 18:42:55,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 312 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2024-11-23 18:42:55,217 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 381 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-23 18:42:55,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 378 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-23 18:42:55,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2024-11-23 18:42:55,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1544. [2024-11-23 18:42:55,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1326 states have (on average 1.2616892911010558) internal successors, (1673), 1345 states have internal predecessors, (1673), 174 states have call successors, (174), 43 states have call predecessors, (174), 43 states have return successors, (174), 155 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-23 18:42:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2021 transitions. [2024-11-23 18:42:55,426 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2021 transitions. Word has length 173 [2024-11-23 18:42:55,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:42:55,427 INFO L471 AbstractCegarLoop]: Abstraction has 1544 states and 2021 transitions. [2024-11-23 18:42:55,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:42:55,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2021 transitions. [2024-11-23 18:42:55,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-23 18:42:55,429 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:42:55,429 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:55,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:42:55,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:42:55,630 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:42:55,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:42:55,631 INFO L85 PathProgramCache]: Analyzing trace with hash 6404239, now seen corresponding path program 1 times [2024-11-23 18:42:55,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:42:55,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382724969] [2024-11-23 18:42:55,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:42:55,632 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 18:42:55,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:42:55,634 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:42:55,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:42:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:42:56,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-23 18:42:56,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:42:56,455 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 18:42:56,460 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 18:42:56,548 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:56,548 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 43 treesize of output 34 [2024-11-23 18:42:56,618 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:56,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 71 treesize of output 85 [2024-11-23 18:42:56,779 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:56,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 87 treesize of output 98 [2024-11-23 18:42:56,883 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:56,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 102 treesize of output 112 [2024-11-23 18:42:57,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:42:57,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 143 treesize of output 57 [2024-11-23 18:42:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2024-11-23 18:42:57,801 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:42:57,801 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:42:57,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382724969] [2024-11-23 18:42:57,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382724969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:42:57,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:42:57,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 18:42:57,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791538136] [2024-11-23 18:42:57,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:42:57,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 18:42:57,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:42:57,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 18:42:57,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:42:57,803 INFO L87 Difference]: Start difference. First operand 1544 states and 2021 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:43:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:43:09,946 INFO L93 Difference]: Finished difference Result 3289 states and 4293 transitions. [2024-11-23 18:43:09,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 18:43:09,948 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 173 [2024-11-23 18:43:09,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:43:09,957 INFO L225 Difference]: With dead ends: 3289 [2024-11-23 18:43:09,957 INFO L226 Difference]: Without dead ends: 1807 [2024-11-23 18:43:09,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-11-23 18:43:09,961 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 512 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2024-11-23 18:43:09,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 605 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2024-11-23 18:43:09,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2024-11-23 18:43:10,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1693. [2024-11-23 18:43:10,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1459 states have (on average 1.2542837559972584) internal successors, (1830), 1480 states have internal predecessors, (1830), 187 states have call successors, (187), 46 states have call predecessors, (187), 46 states have return successors, (187), 166 states have call predecessors, (187), 187 states have call successors, (187) [2024-11-23 18:43:10,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2204 transitions. [2024-11-23 18:43:10,257 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2204 transitions. Word has length 173 [2024-11-23 18:43:10,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:43:10,257 INFO L471 AbstractCegarLoop]: Abstraction has 1693 states and 2204 transitions. [2024-11-23 18:43:10,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:43:10,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2204 transitions. [2024-11-23 18:43:10,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-23 18:43:10,261 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:43:10,261 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:43:10,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:43:10,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:43:10,466 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:43:10,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:43:10,466 INFO L85 PathProgramCache]: Analyzing trace with hash 4557197, now seen corresponding path program 1 times [2024-11-23 18:43:10,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:43:10,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81260336] [2024-11-23 18:43:10,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:43:10,467 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 18:43:10,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:43:10,469 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:43:10,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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)] Waiting until timeout for monitored process [2024-11-23 18:43:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:43:11,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 18:43:11,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:43:11,403 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 18:43:11,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:11,722 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 56 treesize of output 50 [2024-11-23 18:43:11,905 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:11,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 99 treesize of output 104 [2024-11-23 18:43:12,249 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:12,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 115 treesize of output 117 [2024-11-23 18:43:12,448 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:12,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 130 treesize of output 131 [2024-11-23 18:43:14,075 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:14,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 160 treesize of output 66 [2024-11-23 18:43:14,324 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2024-11-23 18:43:14,324 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:43:14,324 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:43:14,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81260336] [2024-11-23 18:43:14,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81260336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:43:14,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:43:14,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 18:43:14,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349083730] [2024-11-23 18:43:14,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:43:14,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 18:43:14,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:43:14,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 18:43:14,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-23 18:43:14,327 INFO L87 Difference]: Start difference. First operand 1693 states and 2204 transitions. Second operand has 14 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 14 states have internal predecessors, (82), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-23 18:43:38,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:43:38,556 INFO L93 Difference]: Finished difference Result 1883 states and 2435 transitions. [2024-11-23 18:43:38,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-23 18:43:38,557 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 14 states have internal predecessors, (82), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 173 [2024-11-23 18:43:38,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:43:38,564 INFO L225 Difference]: With dead ends: 1883 [2024-11-23 18:43:38,564 INFO L226 Difference]: Without dead ends: 1881 [2024-11-23 18:43:38,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=216, Invalid=974, Unknown=0, NotChecked=0, Total=1190 [2024-11-23 18:43:38,566 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 594 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2024-11-23 18:43:38,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 802 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1473 Invalid, 0 Unknown, 0 Unchecked, 21.9s Time] [2024-11-23 18:43:38,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2024-11-23 18:43:38,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1747. [2024-11-23 18:43:38,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1513 states have (on average 1.2452081956378056) internal successors, (1884), 1534 states have internal predecessors, (1884), 187 states have call successors, (187), 46 states have call predecessors, (187), 46 states have return successors, (187), 166 states have call predecessors, (187), 187 states have call successors, (187) [2024-11-23 18:43:38,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2258 transitions. [2024-11-23 18:43:38,839 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2258 transitions. Word has length 173 [2024-11-23 18:43:38,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:43:38,840 INFO L471 AbstractCegarLoop]: Abstraction has 1747 states and 2258 transitions. [2024-11-23 18:43:38,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 14 states have internal predecessors, (82), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-23 18:43:38,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2258 transitions. [2024-11-23 18:43:38,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-23 18:43:38,843 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:43:38,843 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:43:38,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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)] Ended with exit code 0 [2024-11-23 18:43:39,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:43:39,044 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:43:39,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:43:39,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1781411601, now seen corresponding path program 1 times [2024-11-23 18:43:39,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:43:39,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151856428] [2024-11-23 18:43:39,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:43:39,050 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 18:43:39,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:43:39,052 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:43:39,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:43:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:43:39,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-23 18:43:39,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:43:40,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:40,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:40,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:40,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 31 [2024-11-23 18:43:40,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:40,140 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 50 treesize of output 40 [2024-11-23 18:43:40,324 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:40,325 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 50 treesize of output 40 [2024-11-23 18:43:40,502 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:40,502 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 50 treesize of output 40 [2024-11-23 18:43:40,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:40,718 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 50 treesize of output 40 [2024-11-23 18:43:40,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:40,945 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 50 treesize of output 40 [2024-11-23 18:43:41,179 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:41,179 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 50 [2024-11-23 18:43:41,569 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:41,569 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 55 treesize of output 63 [2024-11-23 18:43:42,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:42,173 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 70 treesize of output 66 [2024-11-23 18:43:42,588 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:42,589 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 65 treesize of output 76 [2024-11-23 18:43:43,200 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:43,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 75 treesize of output 89 [2024-11-23 18:43:43,911 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:43,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 90 treesize of output 92 [2024-11-23 18:43:44,550 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:44,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 90 treesize of output 83 [2024-11-23 18:43:45,182 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:45,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 93 treesize of output 99 [2024-11-23 18:43:45,465 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:45,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 121 treesize of output 123 [2024-11-23 18:43:45,907 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:45,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 132 treesize of output 137 [2024-11-23 18:43:46,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:46,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 132 treesize of output 145 [2024-11-23 18:43:47,574 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:47,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 159 treesize of output 81 [2024-11-23 18:43:47,710 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 496 proven. 144 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-23 18:43:47,710 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:43:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:43:48,042 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:43:48,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151856428] [2024-11-23 18:43:48,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151856428] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 18:43:48,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:43:48,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 15 [2024-11-23 18:43:48,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855698103] [2024-11-23 18:43:48,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:43:48,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:43:48,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:43:48,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:43:48,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-23 18:43:48,045 INFO L87 Difference]: Start difference. First operand 1747 states and 2258 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:43:51,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:43:51,698 INFO L93 Difference]: Finished difference Result 3615 states and 4662 transitions. [2024-11-23 18:43:51,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:43:51,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 173 [2024-11-23 18:43:51,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:43:51,710 INFO L225 Difference]: With dead ends: 3615 [2024-11-23 18:43:51,710 INFO L226 Difference]: Without dead ends: 1930 [2024-11-23 18:43:51,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-23 18:43:51,716 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 118 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:43:51,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 670 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-23 18:43:51,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2024-11-23 18:43:52,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1755. [2024-11-23 18:43:52,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1518 states have (on average 1.2325428194993413) internal successors, (1871), 1539 states have internal predecessors, (1871), 189 states have call successors, (189), 47 states have call predecessors, (189), 47 states have return successors, (189), 168 states have call predecessors, (189), 189 states have call successors, (189) [2024-11-23 18:43:52,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2249 transitions. [2024-11-23 18:43:52,049 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2249 transitions. Word has length 173 [2024-11-23 18:43:52,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:43:52,050 INFO L471 AbstractCegarLoop]: Abstraction has 1755 states and 2249 transitions. [2024-11-23 18:43:52,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:43:52,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2249 transitions. [2024-11-23 18:43:52,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-23 18:43:52,053 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:43:52,053 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:43:52,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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)] Ended with exit code 0 [2024-11-23 18:43:52,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:43:52,254 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:43:52,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:43:52,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1833497325, now seen corresponding path program 1 times [2024-11-23 18:43:52,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:43:52,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409385645] [2024-11-23 18:43:52,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:43:52,256 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 18:43:52,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:43:52,258 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:43:52,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:43:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:43:53,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-23 18:43:53,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:43:53,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 18:43:53,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 71 [2024-11-23 18:43:53,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:53,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 90 treesize of output 92 [2024-11-23 18:43:53,948 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:53,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 90 treesize of output 92 [2024-11-23 18:43:54,415 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:54,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 90 treesize of output 92 [2024-11-23 18:43:54,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:54,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 90 treesize of output 92 [2024-11-23 18:43:55,586 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:55,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 85 treesize of output 102 [2024-11-23 18:43:56,479 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:56,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 100 treesize of output 105 [2024-11-23 18:43:57,261 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:57,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 100 treesize of output 105 [2024-11-23 18:43:57,989 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:57,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 100 treesize of output 105 [2024-11-23 18:43:58,733 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:43:58,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 100 treesize of output 96 [2024-11-23 18:43:59,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 107 [2024-11-23 18:44:02,249 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:02,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 123 treesize of output 107 [2024-11-23 18:44:03,197 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:03,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 108 treesize of output 113 [2024-11-23 18:44:04,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:04,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 114 treesize of output 117 [2024-11-23 18:44:04,859 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:04,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 132 treesize of output 128 [2024-11-23 18:44:05,446 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:05,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 133 treesize of output 138 [2024-11-23 18:44:05,931 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:05,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 143 treesize of output 144 [2024-11-23 18:44:07,478 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:07,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 216 treesize of output 104 [2024-11-23 18:44:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 151 proven. 464 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 18:44:07,916 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:44:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:44:08,587 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:44:08,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409385645] [2024-11-23 18:44:08,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409385645] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 18:44:08,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:44:08,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [26] total 29 [2024-11-23 18:44:08,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818055014] [2024-11-23 18:44:08,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:44:08,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:44:08,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:44:08,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:44:08,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2024-11-23 18:44:08,589 INFO L87 Difference]: Start difference. First operand 1755 states and 2249 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:44:14,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:44:14,072 INFO L93 Difference]: Finished difference Result 3428 states and 4384 transitions. [2024-11-23 18:44:14,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 18:44:14,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 173 [2024-11-23 18:44:14,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:44:14,081 INFO L225 Difference]: With dead ends: 3428 [2024-11-23 18:44:14,082 INFO L226 Difference]: Without dead ends: 1743 [2024-11-23 18:44:14,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=103, Invalid=889, Unknown=0, NotChecked=0, Total=992 [2024-11-23 18:44:14,086 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 93 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:44:14,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 815 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-23 18:44:14,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2024-11-23 18:44:14,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1737. [2024-11-23 18:44:14,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1737 states, 1500 states have (on average 1.2206666666666666) internal successors, (1831), 1521 states have internal predecessors, (1831), 189 states have call successors, (189), 47 states have call predecessors, (189), 47 states have return successors, (189), 168 states have call predecessors, (189), 189 states have call successors, (189) [2024-11-23 18:44:14,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2209 transitions. [2024-11-23 18:44:14,369 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2209 transitions. Word has length 173 [2024-11-23 18:44:14,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:44:14,372 INFO L471 AbstractCegarLoop]: Abstraction has 1737 states and 2209 transitions. [2024-11-23 18:44:14,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:44:14,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2209 transitions. [2024-11-23 18:44:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-23 18:44:14,375 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:44:14,375 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:44:14,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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)] Ended with exit code 0 [2024-11-23 18:44:14,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:44:14,576 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:44:14,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:44:14,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1888042497, now seen corresponding path program 1 times [2024-11-23 18:44:14,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:44:14,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541874293] [2024-11-23 18:44:14,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:44:14,577 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 18:44:14,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:44:14,578 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:44:14,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:44:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:44:15,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-23 18:44:15,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:44:15,428 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 14 treesize of output 10 [2024-11-23 18:44:15,700 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 18:44:15,979 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:15,979 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 18:44:16,343 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:16,343 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 50 treesize of output 40 [2024-11-23 18:44:16,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:16,629 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 50 [2024-11-23 18:44:17,082 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:17,082 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 60 treesize of output 53 [2024-11-23 18:44:17,506 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:17,507 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 60 treesize of output 53 [2024-11-23 18:44:17,862 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:17,863 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 55 treesize of output 63 [2024-11-23 18:44:18,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 86 [2024-11-23 18:44:20,078 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:20,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 141 treesize of output 140 [2024-11-23 18:44:20,543 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:20,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 151 treesize of output 155 [2024-11-23 18:44:21,635 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:21,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 181 treesize of output 77 [2024-11-23 18:44:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 599 proven. 45 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-23 18:44:22,626 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:44:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 18:44:23,786 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:44:23,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541874293] [2024-11-23 18:44:23,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541874293] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 18:44:23,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:44:23,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 23 [2024-11-23 18:44:23,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298390167] [2024-11-23 18:44:23,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:44:23,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:44:23,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:44:23,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:44:23,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2024-11-23 18:44:23,788 INFO L87 Difference]: Start difference. First operand 1737 states and 2209 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:44:30,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:44:30,952 INFO L93 Difference]: Finished difference Result 3481 states and 4409 transitions. [2024-11-23 18:44:30,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:44:30,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 173 [2024-11-23 18:44:30,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:44:30,962 INFO L225 Difference]: With dead ends: 3481 [2024-11-23 18:44:30,962 INFO L226 Difference]: Without dead ends: 1814 [2024-11-23 18:44:30,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2024-11-23 18:44:30,966 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 265 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-23 18:44:30,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 502 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-23 18:44:30,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2024-11-23 18:44:31,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1783. [2024-11-23 18:44:31,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1526 states have (on average 1.2142857142857142) internal successors, (1853), 1549 states have internal predecessors, (1853), 201 states have call successors, (201), 55 states have call predecessors, (201), 55 states have return successors, (201), 178 states have call predecessors, (201), 201 states have call successors, (201) [2024-11-23 18:44:31,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 2255 transitions. [2024-11-23 18:44:31,173 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 2255 transitions. Word has length 173 [2024-11-23 18:44:31,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:44:31,173 INFO L471 AbstractCegarLoop]: Abstraction has 1783 states and 2255 transitions. [2024-11-23 18:44:31,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 18:44:31,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 2255 transitions. [2024-11-23 18:44:31,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-23 18:44:31,176 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:44:31,176 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:44:31,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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)] Ended with exit code 0 [2024-11-23 18:44:31,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:44:31,377 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:44:31,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:44:31,378 INFO L85 PathProgramCache]: Analyzing trace with hash -447293931, now seen corresponding path program 1 times [2024-11-23 18:44:31,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:44:31,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784139378] [2024-11-23 18:44:31,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:44:31,378 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 18:44:31,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:44:31,382 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:44:31,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:44:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:44:32,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-23 18:44:32,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:44:32,198 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 18:44:32,528 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 42 treesize of output 20 [2024-11-23 18:44:32,651 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 42 treesize of output 20 [2024-11-23 18:44:32,791 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 37 treesize of output 30 [2024-11-23 18:44:33,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:33,090 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 18:44:33,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:33,299 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 18:44:33,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:33,669 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 46 [2024-11-23 18:44:33,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:33,978 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 18:44:34,476 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:34,476 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 85 treesize of output 79 [2024-11-23 18:44:35,337 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:35,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 113 treesize of output 112 [2024-11-23 18:44:35,662 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:35,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 126 [2024-11-23 18:44:36,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:36,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 149 treesize of output 61 [2024-11-23 18:44:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 572 proven. 84 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-23 18:44:38,009 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:44:39,446 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:44:39,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784139378] [2024-11-23 18:44:39,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784139378] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:44:39,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2032976654] [2024-11-23 18:44:39,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:44:39,447 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 18:44:39,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 18:44:39,452 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 18:44:39,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-23 18:44:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:44:42,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-23 18:44:42,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:44:43,161 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 18:44:45,072 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 34 treesize of output 18 [2024-11-23 18:44:45,317 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 18:44:45,969 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:45,969 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 42 treesize of output 29 [2024-11-23 18:44:46,275 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:46,275 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 18:44:46,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:46,904 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 47 treesize of output 48 [2024-11-23 18:44:47,765 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:47,765 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 58 treesize of output 51 [2024-11-23 18:44:48,292 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:48,293 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 58 treesize of output 51 [2024-11-23 18:44:48,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:48,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 67 [2024-11-23 18:44:50,465 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:50,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 93 treesize of output 98 [2024-11-23 18:44:51,109 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:51,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 106 treesize of output 110 [2024-11-23 18:44:52,463 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:44:52,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 123 treesize of output 63 [2024-11-23 18:44:53,773 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 556 proven. 84 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-23 18:44:53,773 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:44:53,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2032976654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:44:53,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 18:44:53,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2024-11-23 18:44:53,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984417273] [2024-11-23 18:44:53,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 18:44:53,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-23 18:44:53,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:44:53,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-23 18:44:53,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1351, Unknown=0, NotChecked=0, Total=1640 [2024-11-23 18:44:53,992 INFO L87 Difference]: Start difference. First operand 1783 states and 2255 transitions. Second operand has 36 states, 32 states have (on average 5.5) internal successors, (176), 34 states have internal predecessors, (176), 14 states have call successors, (40), 12 states have call predecessors, (40), 14 states have return successors, (40), 12 states have call predecessors, (40), 14 states have call successors, (40) [2024-11-23 18:44:58,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s 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 18:45:37,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:45:37,126 INFO L93 Difference]: Finished difference Result 3796 states and 4676 transitions. [2024-11-23 18:45:37,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-23 18:45:37,135 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 5.5) internal successors, (176), 34 states have internal predecessors, (176), 14 states have call successors, (40), 12 states have call predecessors, (40), 14 states have return successors, (40), 12 states have call predecessors, (40), 14 states have call successors, (40) Word has length 173 [2024-11-23 18:45:37,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:45:37,149 INFO L225 Difference]: With dead ends: 3796 [2024-11-23 18:45:37,149 INFO L226 Difference]: Without dead ends: 2083 [2024-11-23 18:45:37,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 378 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1402 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=1105, Invalid=4297, Unknown=0, NotChecked=0, Total=5402 [2024-11-23 18:45:37,153 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 697 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 176 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 2485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:45:37,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 1593 Invalid, 2485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2305 Invalid, 4 Unknown, 0 Unchecked, 36.0s Time] [2024-11-23 18:45:37,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2024-11-23 18:45:37,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 622. [2024-11-23 18:45:37,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 534 states have (on average 1.2078651685393258) internal successors, (645), 536 states have internal predecessors, (645), 58 states have call successors, (58), 29 states have call predecessors, (58), 29 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-23 18:45:37,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 761 transitions. [2024-11-23 18:45:37,275 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 761 transitions. Word has length 173 [2024-11-23 18:45:37,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:45:37,276 INFO L471 AbstractCegarLoop]: Abstraction has 622 states and 761 transitions. [2024-11-23 18:45:37,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 5.5) internal successors, (176), 34 states have internal predecessors, (176), 14 states have call successors, (40), 12 states have call predecessors, (40), 14 states have return successors, (40), 12 states have call predecessors, (40), 14 states have call successors, (40) [2024-11-23 18:45:37,276 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 761 transitions. [2024-11-23 18:45:37,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-23 18:45:37,278 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:45:37,278 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:45:37,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-23 18:45:37,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:45:37,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:45:37,679 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:45:37,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:45:37,680 INFO L85 PathProgramCache]: Analyzing trace with hash -15197968, now seen corresponding path program 1 times [2024-11-23 18:45:37,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:45:37,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842256337] [2024-11-23 18:45:37,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:45:37,682 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 18:45:37,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 18:45:37,683 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:45:37,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:45:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:45:38,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-23 18:45:38,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:45:38,740 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 18:45:38,746 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 18:45:38,752 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 18:45:38,844 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 18:45:38,922 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 43 treesize of output 25 [2024-11-23 18:45:38,983 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:45:38,983 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 44 treesize of output 49 [2024-11-23 18:45:39,072 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:45:39,072 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 83 treesize of output 82 [2024-11-23 18:45:39,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:45:39,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 99 treesize of output 95 [2024-11-23 18:45:39,409 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:45:39,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 114 treesize of output 109 [2024-11-23 18:45:39,985 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 18:45:39,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 158 treesize of output 66 [2024-11-23 18:45:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2024-11-23 18:45:40,195 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:45:40,196 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 18:45:40,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842256337] [2024-11-23 18:45:40,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842256337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:45:40,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:45:40,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 18:45:40,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391823483] [2024-11-23 18:45:40,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:45:40,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 18:45:40,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 18:45:40,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 18:45:40,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:45:40,199 INFO L87 Difference]: Start difference. First operand 622 states and 761 transitions. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:45:42,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s 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 18:45:57,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:45:57,327 INFO L93 Difference]: Finished difference Result 1734 states and 2096 transitions. [2024-11-23 18:45:57,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-23 18:45:57,328 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 174 [2024-11-23 18:45:57,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:45:57,329 INFO L225 Difference]: With dead ends: 1734 [2024-11-23 18:45:57,329 INFO L226 Difference]: Without dead ends: 0 [2024-11-23 18:45:57,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=160, Invalid=542, Unknown=0, NotChecked=0, Total=702 [2024-11-23 18:45:57,332 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 575 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:45:57,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1245 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time] [2024-11-23 18:45:57,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-23 18:45:57,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-23 18:45:57,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:45:57,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-23 18:45:57,335 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 174 [2024-11-23 18:45:57,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:45:57,335 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 18:45:57,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 18:45:57,335 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-23 18:45:57,336 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-23 18:45:57,339 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-23 18:45:57,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:45:57,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f33e295-b6e4-426d-820c-2446af852c84/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 18:45:57,543 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, 1, 1, 1] [2024-11-23 18:45:57,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.