./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-47.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-47.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b982617b4eafec7cbb1a277d4cd75e5591003436ed1218fbd6f7cc65704fea2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:25:45,239 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:25:45,297 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 08:25:45,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:25:45,302 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:25:45,323 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:25:45,324 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:25:45,324 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:25:45,325 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:25:45,325 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:25:45,325 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:25:45,325 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:25:45,325 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:25:45,325 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:25:45,325 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:25:45,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:25:45,326 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:25:45,326 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:25:45,326 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:25:45,326 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:25:45,326 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:25:45,326 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:25:45,326 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:25:45,326 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:25:45,326 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:25:45,326 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:25:45,326 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:25:45,327 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:25:45,327 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:25:45,327 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:25:45,327 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:25:45,327 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:25:45,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:25:45,327 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:25:45,327 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:25:45,327 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:25:45,327 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:25:45,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:25:45,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:25:45,328 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:25:45,328 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:25:45,328 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:25:45,328 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:25:45,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:25:45,328 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:25:45,328 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:25:45,328 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:25:45,328 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:25:45,328 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_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b982617b4eafec7cbb1a277d4cd75e5591003436ed1218fbd6f7cc65704fea2 [2024-12-02 08:25:45,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:25:45,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:25:45,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:25:45,556 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:25:45,556 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:25:45,557 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-47.i [2024-12-02 08:25:48,177 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/data/43e6e0e0a/bc0da92119ef45a2bf38a8ace09d636b/FLAGb0960c99e [2024-12-02 08:25:48,404 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:25:48,405 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-47.i [2024-12-02 08:25:48,414 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/data/43e6e0e0a/bc0da92119ef45a2bf38a8ace09d636b/FLAGb0960c99e [2024-12-02 08:25:48,758 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/data/43e6e0e0a/bc0da92119ef45a2bf38a8ace09d636b [2024-12-02 08:25:48,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:25:48,761 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:25:48,762 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:25:48,762 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:25:48,765 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:25:48,766 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:25:48" (1/1) ... [2024-12-02 08:25:48,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18788d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:48, skipping insertion in model container [2024-12-02 08:25:48,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:25:48" (1/1) ... [2024-12-02 08:25:48,780 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:25:48,910 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_58055362-9f92-4087-af5e-68a19f46dab2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-47.i[916,929] [2024-12-02 08:25:48,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:25:48,966 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:25:48,977 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_58055362-9f92-4087-af5e-68a19f46dab2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-47.i[916,929] [2024-12-02 08:25:49,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:25:49,026 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:25:49,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:49 WrapperNode [2024-12-02 08:25:49,026 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:25:49,027 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:25:49,027 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:25:49,027 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:25:49,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:49" (1/1) ... [2024-12-02 08:25:49,045 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:49" (1/1) ... [2024-12-02 08:25:49,075 INFO L138 Inliner]: procedures = 29, calls = 136, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 450 [2024-12-02 08:25:49,076 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:25:49,076 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:25:49,077 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:25:49,077 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:25:49,086 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:49" (1/1) ... [2024-12-02 08:25:49,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:49" (1/1) ... [2024-12-02 08:25:49,090 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:49" (1/1) ... [2024-12-02 08:25:49,106 INFO L175 MemorySlicer]: Split 115 memory accesses to 2 slices as follows [2, 113]. 98 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 9]. The 12 writes are split as follows [0, 12]. [2024-12-02 08:25:49,107 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:49" (1/1) ... [2024-12-02 08:25:49,107 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:49" (1/1) ... [2024-12-02 08:25:49,122 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:49" (1/1) ... [2024-12-02 08:25:49,123 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:49" (1/1) ... [2024-12-02 08:25:49,127 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:49" (1/1) ... [2024-12-02 08:25:49,128 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:49" (1/1) ... [2024-12-02 08:25:49,130 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:49" (1/1) ... [2024-12-02 08:25:49,133 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:25:49,134 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:25:49,134 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:25:49,134 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:25:49,135 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:49" (1/1) ... [2024-12-02 08:25:49,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:25:49,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:25:49,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:25:49,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:25:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:25:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-12-02 08:25:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-12-02 08:25:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 08:25:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 08:25:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-12-02 08:25:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-12-02 08:25:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 08:25:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 08:25:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-12-02 08:25:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-12-02 08:25:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 08:25:49,201 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 08:25:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:25:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 08:25:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:25:49,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:25:49,297 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:25:49,299 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:25:49,696 INFO L? ?]: Removed 130 outVars from TransFormulas that were not future-live. [2024-12-02 08:25:49,696 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:25:49,707 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:25:49,708 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 08:25:49,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:25:49 BoogieIcfgContainer [2024-12-02 08:25:49,708 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:25:49,710 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:25:49,710 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:25:49,714 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:25:49,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:25:48" (1/3) ... [2024-12-02 08:25:49,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785d244c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:25:49, skipping insertion in model container [2024-12-02 08:25:49,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:49" (2/3) ... [2024-12-02 08:25:49,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785d244c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:25:49, skipping insertion in model container [2024-12-02 08:25:49,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:25:49" (3/3) ... [2024-12-02 08:25:49,716 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-47.i [2024-12-02 08:25:49,732 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:25:49,733 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-s_file-47.i that has 2 procedures, 96 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 08:25:49,785 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:25:49,796 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;@30adcca3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:25:49,796 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 08:25:49,800 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 84 states have (on average 1.4642857142857142) internal successors, (123), 85 states have internal predecessors, (123), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-12-02 08:25:49,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 08:25:49,809 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:25:49,810 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:25:49,810 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:25:49,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:25:49,815 INFO L85 PathProgramCache]: Analyzing trace with hash -766083450, now seen corresponding path program 1 times [2024-12-02 08:25:49,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:25:49,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747879294] [2024-12-02 08:25:49,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:25:49,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:25:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:25:50,049 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 08:25:50,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:25:50,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747879294] [2024-12-02 08:25:50,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747879294] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:25:50,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226493952] [2024-12-02 08:25:50,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:25:50,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:25:50,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:25:50,052 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:25:50,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:25:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:25:50,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 08:25:50,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:25:50,244 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 08:25:50,244 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:25:50,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226493952] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:25:50,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:25:50,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 08:25:50,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293018779] [2024-12-02 08:25:50,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:25:50,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:25:50,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:25:50,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:25:50,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:25:50,272 INFO L87 Difference]: Start difference. First operand has 96 states, 84 states have (on average 1.4642857142857142) internal successors, (123), 85 states have internal predecessors, (123), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 08:25:50,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:25:50,296 INFO L93 Difference]: Finished difference Result 185 states and 285 transitions. [2024-12-02 08:25:50,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:25:50,298 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 84 [2024-12-02 08:25:50,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:25:50,304 INFO L225 Difference]: With dead ends: 185 [2024-12-02 08:25:50,304 INFO L226 Difference]: Without dead ends: 92 [2024-12-02 08:25:50,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:25:50,309 INFO L435 NwaCegarLoop]: 134 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, 134 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:25:50,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:25:50,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-12-02 08:25:50,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-12-02 08:25:50,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 81 states have internal predecessors, (116), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-12-02 08:25:50,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 134 transitions. [2024-12-02 08:25:50,345 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 134 transitions. Word has length 84 [2024-12-02 08:25:50,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:25:50,346 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 134 transitions. [2024-12-02 08:25:50,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 08:25:50,346 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 134 transitions. [2024-12-02 08:25:50,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 08:25:50,349 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:25:50,349 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:25:50,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:25:50,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 08:25:50,550 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:25:50,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:25:50,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1428001612, now seen corresponding path program 1 times [2024-12-02 08:25:50,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:25:50,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242421629] [2024-12-02 08:25:50,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:25:50,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:25:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:25:50,691 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:25:50,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:25:50,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242421629] [2024-12-02 08:25:50,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242421629] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:25:50,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:25:50,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:25:50,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564223241] [2024-12-02 08:25:50,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:25:50,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:25:50,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:25:50,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:25:50,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:25:50,694 INFO L87 Difference]: Start difference. First operand 92 states and 134 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:25:50,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:25:50,721 INFO L93 Difference]: Finished difference Result 182 states and 267 transitions. [2024-12-02 08:25:50,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:25:50,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 84 [2024-12-02 08:25:50,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:25:50,723 INFO L225 Difference]: With dead ends: 182 [2024-12-02 08:25:50,723 INFO L226 Difference]: Without dead ends: 93 [2024-12-02 08:25:50,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:25:50,725 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 0 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:25:50,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 260 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:25:50,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-12-02 08:25:50,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-12-02 08:25:50,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 82 states have (on average 1.4268292682926829) internal successors, (117), 82 states have internal predecessors, (117), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-12-02 08:25:50,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 135 transitions. [2024-12-02 08:25:50,734 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 135 transitions. Word has length 84 [2024-12-02 08:25:50,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:25:50,736 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 135 transitions. [2024-12-02 08:25:50,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:25:50,736 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 135 transitions. [2024-12-02 08:25:50,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 08:25:50,737 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:25:50,738 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:25:50,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:25:50,738 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:25:50,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:25:50,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1178021942, now seen corresponding path program 1 times [2024-12-02 08:25:50,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:25:50,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529244054] [2024-12-02 08:25:50,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:25:50,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:25:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:25:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-12-02 08:25:51,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:25:51,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529244054] [2024-12-02 08:25:51,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529244054] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:25:51,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779420623] [2024-12-02 08:25:51,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:25:51,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:25:51,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:25:51,021 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:25:51,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:25:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:25:51,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 08:25:51,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:25:51,220 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:25:51,220 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:25:51,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779420623] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:25:51,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:25:51,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-12-02 08:25:51,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702111856] [2024-12-02 08:25:51,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:25:51,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:25:51,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:25:51,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:25:51,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 08:25:51,222 INFO L87 Difference]: Start difference. First operand 93 states and 135 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:25:51,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:25:51,257 INFO L93 Difference]: Finished difference Result 186 states and 271 transitions. [2024-12-02 08:25:51,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:25:51,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 84 [2024-12-02 08:25:51,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:25:51,259 INFO L225 Difference]: With dead ends: 186 [2024-12-02 08:25:51,259 INFO L226 Difference]: Without dead ends: 96 [2024-12-02 08:25:51,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 08:25:51,261 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 1 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:25:51,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 384 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:25:51,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-12-02 08:25:51,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2024-12-02 08:25:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 84 states have (on average 1.4166666666666667) internal successors, (119), 84 states have internal predecessors, (119), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-12-02 08:25:51,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 137 transitions. [2024-12-02 08:25:51,268 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 137 transitions. Word has length 84 [2024-12-02 08:25:51,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:25:51,268 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 137 transitions. [2024-12-02 08:25:51,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:25:51,269 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 137 transitions. [2024-12-02 08:25:51,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 08:25:51,270 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:25:51,270 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:25:51,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:25:51,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-12-02 08:25:51,471 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:25:51,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:25:51,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1179868984, now seen corresponding path program 1 times [2024-12-02 08:25:51,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:25:51,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970889280] [2024-12-02 08:25:51,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:25:51,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:25:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:25:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-12-02 08:25:51,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:25:51,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970889280] [2024-12-02 08:25:51,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970889280] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:25:51,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821340441] [2024-12-02 08:25:51,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:25:51,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:25:51,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:25:51,666 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:25:51,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 08:25:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:25:51,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 08:25:51,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:25:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:25:51,861 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:25:51,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821340441] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:25:51,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:25:51,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2024-12-02 08:25:51,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019054876] [2024-12-02 08:25:51,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:25:51,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:25:51,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:25:51,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:25:51,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 08:25:51,863 INFO L87 Difference]: Start difference. First operand 95 states and 137 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:25:51,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:25:51,897 INFO L93 Difference]: Finished difference Result 190 states and 275 transitions. [2024-12-02 08:25:51,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:25:51,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 84 [2024-12-02 08:25:51,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:25:51,898 INFO L225 Difference]: With dead ends: 190 [2024-12-02 08:25:51,898 INFO L226 Difference]: Without dead ends: 98 [2024-12-02 08:25:51,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 08:25:51,900 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:25:51,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 509 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:25:51,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-12-02 08:25:51,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-12-02 08:25:51,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 87 states have (on average 1.4022988505747127) internal successors, (122), 87 states have internal predecessors, (122), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-12-02 08:25:51,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 140 transitions. [2024-12-02 08:25:51,908 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 140 transitions. Word has length 84 [2024-12-02 08:25:51,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:25:51,909 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 140 transitions. [2024-12-02 08:25:51,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:25:51,909 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 140 transitions. [2024-12-02 08:25:51,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 08:25:51,910 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:25:51,910 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:25:51,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 08:25:52,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:25:52,111 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:25:52,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:25:52,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1603693142, now seen corresponding path program 1 times [2024-12-02 08:25:52,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:25:52,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389351140] [2024-12-02 08:25:52,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:25:52,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:25:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:25:52,179 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:25:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:25:52,247 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 08:25:52,247 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:25:52,248 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 08:25:52,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:25:52,253 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-12-02 08:25:52,289 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 08:25:52,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:25:52 BoogieIcfgContainer [2024-12-02 08:25:52,291 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 08:25:52,292 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 08:25:52,292 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 08:25:52,292 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 08:25:52,293 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:25:49" (3/4) ... [2024-12-02 08:25:52,295 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 08:25:52,296 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 08:25:52,296 INFO L158 Benchmark]: Toolchain (without parser) took 3535.43ms. Allocated memory is still 142.6MB. Free memory was 118.2MB in the beginning and 54.7MB in the end (delta: 63.5MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. [2024-12-02 08:25:52,297 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:25:52,297 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.49ms. Allocated memory is still 142.6MB. Free memory was 118.2MB in the beginning and 103.6MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 08:25:52,297 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.73ms. Allocated memory is still 142.6MB. Free memory was 103.6MB in the beginning and 100.4MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:25:52,298 INFO L158 Benchmark]: Boogie Preprocessor took 57.04ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 97.0MB in the end (delta: 3.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:25:52,298 INFO L158 Benchmark]: RCFGBuilder took 573.93ms. Allocated memory is still 142.6MB. Free memory was 96.7MB in the beginning and 69.5MB in the end (delta: 27.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-12-02 08:25:52,298 INFO L158 Benchmark]: TraceAbstraction took 2581.66ms. Allocated memory is still 142.6MB. Free memory was 69.0MB in the beginning and 54.7MB in the end (delta: 14.3MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2024-12-02 08:25:52,298 INFO L158 Benchmark]: Witness Printer took 3.85ms. Allocated memory is still 142.6MB. Free memory was 54.7MB in the beginning and 54.7MB in the end (delta: 17.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:25:52,300 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.49ms. Allocated memory is still 142.6MB. Free memory was 118.2MB in the beginning and 103.6MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.73ms. Allocated memory is still 142.6MB. Free memory was 103.6MB in the beginning and 100.4MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 57.04ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 97.0MB in the end (delta: 3.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 573.93ms. Allocated memory is still 142.6MB. Free memory was 96.7MB in the beginning and 69.5MB in the end (delta: 27.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2581.66ms. Allocated memory is still 142.6MB. Free memory was 69.0MB in the beginning and 54.7MB in the end (delta: 14.3MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * Witness Printer took 3.85ms. Allocated memory is still 142.6MB. Free memory was 54.7MB in the beginning and 54.7MB in the end (delta: 17.7kB). 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 someBinaryDOUBLEComparisonOperation at line 95, overapproximation of someBinaryDOUBLEComparisonOperation at line 95, overapproximation of someBinaryDOUBLEComparisonOperation at line 77, overapproximation of someBinaryDOUBLEComparisonOperation at line 65, overapproximation of someBinaryDOUBLEComparisonOperation at line 77. Possible FailurePath: [L33] unsigned char isInitial = 0; [L34-L44] struct WrapperStruct0 WrapperStruct0 = { 24.575, 3.5, 16, 16, 4, 8, 1, 1, 3.8 }; [L34-L44] struct WrapperStruct0 WrapperStruct0 = { 24.575, 3.5, 16, 16, 4, 8, 1, 1, 3.8 }; [L34-L44] struct WrapperStruct0 WrapperStruct0 = { 24.575, 3.5, 16, 16, 4, 8, 1, 1, 3.8 }; [L34-L44] struct WrapperStruct0 WrapperStruct0 = { 24.575, 3.5, 16, 16, 4, 8, 1, 1, 3.8 }; [L34-L44] struct WrapperStruct0 WrapperStruct0 = { 24.575, 3.5, 16, 16, 4, 8, 1, 1, 3.8 }; [L34-L44] struct WrapperStruct0 WrapperStruct0 = { 24.575, 3.5, 16, 16, 4, 8, 1, 1, 3.8 }; [L34-L44] struct WrapperStruct0 WrapperStruct0 = { 24.575, 3.5, 16, 16, 4, 8, 1, 1, 3.8 }; [L34-L44] struct WrapperStruct0 WrapperStruct0 = { 24.575, 3.5, 16, 16, 4, 8, 1, 1, 3.8 }; [L34-L44] struct WrapperStruct0 WrapperStruct0 = { 24.575, 3.5, 16, 16, 4, 8, 1, 1, 3.8 }; [L34-L44] struct WrapperStruct0 WrapperStruct0 = { 24.575, 3.5, 16, 16, 4, 8, 1, 1, 3.8 }; [L45] signed long int last_1_WrapperStruct0_var_1_12 = 8; VAL [WrapperStruct0={4:0}, isInitial=0, last_1_WrapperStruct0_var_1_12=8] [L99] isInitial = 1 [L100] FCALL initially() [L102] CALL updateLastVariables() [L92] EXPR WrapperStruct0.var_1_12 [L92] last_1_WrapperStruct0_var_1_12 = WrapperStruct0.var_1_12 [L102] RET updateLastVariables() [L103] CALL updateVariables() [L76] WrapperStruct0.var_1_8 = __VERIFIER_nondet_double() [L77] EXPR WrapperStruct0.var_1_8 [L77] EXPR WrapperStruct0.var_1_8 >= -922337.2036854765600e+13F && WrapperStruct0.var_1_8 <= -1.0e-20F VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L77] EXPR WrapperStruct0.var_1_8 >= -922337.2036854765600e+13F && WrapperStruct0.var_1_8 <= -1.0e-20F [L77] EXPR WrapperStruct0.var_1_8 [L77] EXPR WrapperStruct0.var_1_8 >= -922337.2036854765600e+13F && WrapperStruct0.var_1_8 <= -1.0e-20F VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L77] EXPR (WrapperStruct0.var_1_8 >= -922337.2036854765600e+13F && WrapperStruct0.var_1_8 <= -1.0e-20F) || (WrapperStruct0.var_1_8 <= 9223372.036854765600e+12F && WrapperStruct0.var_1_8 >= 1.0e-20F ) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L77] EXPR (WrapperStruct0.var_1_8 >= -922337.2036854765600e+13F && WrapperStruct0.var_1_8 <= -1.0e-20F) || (WrapperStruct0.var_1_8 <= 9223372.036854765600e+12F && WrapperStruct0.var_1_8 >= 1.0e-20F ) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L77] CALL assume_abort_if_not((WrapperStruct0.var_1_8 >= -922337.2036854765600e+13F && WrapperStruct0.var_1_8 <= -1.0e-20F) || (WrapperStruct0.var_1_8 <= 9223372.036854765600e+12F && WrapperStruct0.var_1_8 >= 1.0e-20F )) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L20] COND FALSE !(!cond) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L77] RET assume_abort_if_not((WrapperStruct0.var_1_8 >= -922337.2036854765600e+13F && WrapperStruct0.var_1_8 <= -1.0e-20F) || (WrapperStruct0.var_1_8 <= 9223372.036854765600e+12F && WrapperStruct0.var_1_8 >= 1.0e-20F )) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L78] WrapperStruct0.var_1_10 = __VERIFIER_nondet_char() [L79] EXPR WrapperStruct0.var_1_10 VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L79] CALL assume_abort_if_not(WrapperStruct0.var_1_10 >= -63) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L20] COND FALSE !(!cond) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L79] RET assume_abort_if_not(WrapperStruct0.var_1_10 >= -63) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L80] EXPR WrapperStruct0.var_1_10 VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L80] CALL assume_abort_if_not(WrapperStruct0.var_1_10 <= 63) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L20] COND FALSE !(!cond) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L80] RET assume_abort_if_not(WrapperStruct0.var_1_10 <= 63) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L81] WrapperStruct0.var_1_11 = __VERIFIER_nondet_char() [L82] EXPR WrapperStruct0.var_1_11 VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L82] CALL assume_abort_if_not(WrapperStruct0.var_1_11 >= -63) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L20] COND FALSE !(!cond) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L82] RET assume_abort_if_not(WrapperStruct0.var_1_11 >= -63) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L83] EXPR WrapperStruct0.var_1_11 VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L83] CALL assume_abort_if_not(WrapperStruct0.var_1_11 <= 63) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L20] COND FALSE !(!cond) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L83] RET assume_abort_if_not(WrapperStruct0.var_1_11 <= 63) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L84] WrapperStruct0.var_1_13 = __VERIFIER_nondet_uchar() [L85] EXPR WrapperStruct0.var_1_13 VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L85] CALL assume_abort_if_not(WrapperStruct0.var_1_13 >= 0) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L20] COND FALSE !(!cond) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L85] RET assume_abort_if_not(WrapperStruct0.var_1_13 >= 0) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L86] EXPR WrapperStruct0.var_1_13 VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L86] CALL assume_abort_if_not(WrapperStruct0.var_1_13 <= 1) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L20] COND FALSE !(!cond) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L86] RET assume_abort_if_not(WrapperStruct0.var_1_13 <= 1) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L87] WrapperStruct0.var_1_14 = __VERIFIER_nondet_uchar() [L88] EXPR WrapperStruct0.var_1_14 VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L88] CALL assume_abort_if_not(WrapperStruct0.var_1_14 >= 0) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L20] COND FALSE !(!cond) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L88] RET assume_abort_if_not(WrapperStruct0.var_1_14 >= 0) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L89] EXPR WrapperStruct0.var_1_14 VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L89] CALL assume_abort_if_not(WrapperStruct0.var_1_14 <= 1) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L20] COND FALSE !(!cond) VAL [WrapperStruct0={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L89] RET assume_abort_if_not(WrapperStruct0.var_1_14 <= 1) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L103] RET updateVariables() [L104] CALL step() [L49] COND FALSE !(-4 > last_1_WrapperStruct0_var_1_12) [L54] EXPR WrapperStruct0.var_1_10 [L54] WrapperStruct0.var_1_9 = WrapperStruct0.var_1_10 [L56] EXPR WrapperStruct0.var_1_13 [L56] unsigned char stepLocal_0 = ! WrapperStruct0.var_1_13; [L57] stepLocal_0 || WrapperStruct0.var_1_14 VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L57] stepLocal_0 || WrapperStruct0.var_1_14 [L57] EXPR WrapperStruct0.var_1_14 [L57] stepLocal_0 || WrapperStruct0.var_1_14 VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L57] COND FALSE !(stepLocal_0 || WrapperStruct0.var_1_14) [L64] EXPR WrapperStruct0.var_1_8 [L64] WrapperStruct0.var_1_15 = WrapperStruct0.var_1_8 [L65] EXPR WrapperStruct0.var_1_15 [L65] EXPR WrapperStruct0.var_1_15 VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L65] COND FALSE !(WrapperStruct0.var_1_15 <= WrapperStruct0.var_1_15) [L70] EXPR WrapperStruct0.var_1_12 [L70] EXPR WrapperStruct0.var_1_9 VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L70] COND TRUE WrapperStruct0.var_1_12 > WrapperStruct0.var_1_9 [L71] EXPR WrapperStruct0.var_1_8 [L71] WrapperStruct0.var_1_1 = WrapperStruct0.var_1_8 [L104] RET step() [L105] CALL, EXPR property() [L95] EXPR WrapperStruct0.var_1_15 [L95] EXPR WrapperStruct0.var_1_15 VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L95] EXPR (WrapperStruct0.var_1_15 <= WrapperStruct0.var_1_15) ? (((WrapperStruct0.var_1_12 + WrapperStruct0.var_1_12) >= (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_1 == ((double) ((((WrapperStruct0.var_1_8) < 0 ) ? -(WrapperStruct0.var_1_8) : (WrapperStruct0.var_1_8))))) : 1) : ((WrapperStruct0.var_1_12 > WrapperStruct0.var_1_9) ? (WrapperStruct0.var_1_1 == ((double) WrapperStruct0.var_1_8)) : 1) [L95] EXPR WrapperStruct0.var_1_12 [L95] EXPR WrapperStruct0.var_1_9 VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L95] EXPR (WrapperStruct0.var_1_12 > WrapperStruct0.var_1_9) ? (WrapperStruct0.var_1_1 == ((double) WrapperStruct0.var_1_8)) : 1 [L95] EXPR WrapperStruct0.var_1_1 [L95] EXPR WrapperStruct0.var_1_8 [L95] EXPR (WrapperStruct0.var_1_12 > WrapperStruct0.var_1_9) ? (WrapperStruct0.var_1_1 == ((double) WrapperStruct0.var_1_8)) : 1 VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L95] EXPR (WrapperStruct0.var_1_15 <= WrapperStruct0.var_1_15) ? (((WrapperStruct0.var_1_12 + WrapperStruct0.var_1_12) >= (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_1 == ((double) ((((WrapperStruct0.var_1_8) < 0 ) ? -(WrapperStruct0.var_1_8) : (WrapperStruct0.var_1_8))))) : 1) : ((WrapperStruct0.var_1_12 > WrapperStruct0.var_1_9) ? (WrapperStruct0.var_1_1 == ((double) WrapperStruct0.var_1_8)) : 1) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L95] EXPR ((WrapperStruct0.var_1_15 <= WrapperStruct0.var_1_15) ? (((WrapperStruct0.var_1_12 + WrapperStruct0.var_1_12) >= (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_1 == ((double) ((((WrapperStruct0.var_1_8) < 0 ) ? -(WrapperStruct0.var_1_8) : (WrapperStruct0.var_1_8))))) : 1) : ((WrapperStruct0.var_1_12 > WrapperStruct0.var_1_9) ? (WrapperStruct0.var_1_1 == ((double) WrapperStruct0.var_1_8)) : 1)) && ((-4 > last_1_WrapperStruct0_var_1_12) ? (((~ last_1_WrapperStruct0_var_1_12) <= last_1_WrapperStruct0_var_1_12) ? (WrapperStruct0.var_1_9 == ((signed char) ((((WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11) < 0 ) ? -(WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11) : (WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11))))) : 1) : (WrapperStruct0.var_1_9 == ((signed char) WrapperStruct0.var_1_10))) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L95] EXPR ((WrapperStruct0.var_1_15 <= WrapperStruct0.var_1_15) ? (((WrapperStruct0.var_1_12 + WrapperStruct0.var_1_12) >= (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_1 == ((double) ((((WrapperStruct0.var_1_8) < 0 ) ? -(WrapperStruct0.var_1_8) : (WrapperStruct0.var_1_8))))) : 1) : ((WrapperStruct0.var_1_12 > WrapperStruct0.var_1_9) ? (WrapperStruct0.var_1_1 == ((double) WrapperStruct0.var_1_8)) : 1)) && ((-4 > last_1_WrapperStruct0_var_1_12) ? (((~ last_1_WrapperStruct0_var_1_12) <= last_1_WrapperStruct0_var_1_12) ? (WrapperStruct0.var_1_9 == ((signed char) ((((WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11) < 0 ) ? -(WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11) : (WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11))))) : 1) : (WrapperStruct0.var_1_9 == ((signed char) WrapperStruct0.var_1_10))) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L95] EXPR (((WrapperStruct0.var_1_15 <= WrapperStruct0.var_1_15) ? (((WrapperStruct0.var_1_12 + WrapperStruct0.var_1_12) >= (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_1 == ((double) ((((WrapperStruct0.var_1_8) < 0 ) ? -(WrapperStruct0.var_1_8) : (WrapperStruct0.var_1_8))))) : 1) : ((WrapperStruct0.var_1_12 > WrapperStruct0.var_1_9) ? (WrapperStruct0.var_1_1 == ((double) WrapperStruct0.var_1_8)) : 1)) && ((-4 > last_1_WrapperStruct0_var_1_12) ? (((~ last_1_WrapperStruct0_var_1_12) <= last_1_WrapperStruct0_var_1_12) ? (WrapperStruct0.var_1_9 == ((signed char) ((((WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11) < 0 ) ? -(WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11) : (WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11))))) : 1) : (WrapperStruct0.var_1_9 == ((signed char) WrapperStruct0.var_1_10)))) && (((! WrapperStruct0.var_1_13) || WrapperStruct0.var_1_14) ? ((! WrapperStruct0.var_1_14) ? (WrapperStruct0.var_1_12 == ((signed long int) (((((((WrapperStruct0.var_1_9) < (WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_9) : (WrapperStruct0.var_1_9))) < 0 ) ? -((((WrapperStruct0.var_1_9) < (WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_9) : (WrapperStruct0.var_1_9))) : ((((WrapperStruct0.var_1_9) < (WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_9) : (WrapperStruct0.var_1_9))))))) : (WrapperStruct0.var_1_12 == ((signed long int) WrapperStruct0.var_1_9))) : 1) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L95] EXPR (((WrapperStruct0.var_1_15 <= WrapperStruct0.var_1_15) ? (((WrapperStruct0.var_1_12 + WrapperStruct0.var_1_12) >= (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_1 == ((double) ((((WrapperStruct0.var_1_8) < 0 ) ? -(WrapperStruct0.var_1_8) : (WrapperStruct0.var_1_8))))) : 1) : ((WrapperStruct0.var_1_12 > WrapperStruct0.var_1_9) ? (WrapperStruct0.var_1_1 == ((double) WrapperStruct0.var_1_8)) : 1)) && ((-4 > last_1_WrapperStruct0_var_1_12) ? (((~ last_1_WrapperStruct0_var_1_12) <= last_1_WrapperStruct0_var_1_12) ? (WrapperStruct0.var_1_9 == ((signed char) ((((WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11) < 0 ) ? -(WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11) : (WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11))))) : 1) : (WrapperStruct0.var_1_9 == ((signed char) WrapperStruct0.var_1_10)))) && (((! WrapperStruct0.var_1_13) || WrapperStruct0.var_1_14) ? ((! WrapperStruct0.var_1_14) ? (WrapperStruct0.var_1_12 == ((signed long int) (((((((WrapperStruct0.var_1_9) < (WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_9) : (WrapperStruct0.var_1_9))) < 0 ) ? -((((WrapperStruct0.var_1_9) < (WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_9) : (WrapperStruct0.var_1_9))) : ((((WrapperStruct0.var_1_9) < (WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_9) : (WrapperStruct0.var_1_9))))))) : (WrapperStruct0.var_1_12 == ((signed long int) WrapperStruct0.var_1_9))) : 1) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L95] EXPR ((((WrapperStruct0.var_1_15 <= WrapperStruct0.var_1_15) ? (((WrapperStruct0.var_1_12 + WrapperStruct0.var_1_12) >= (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_1 == ((double) ((((WrapperStruct0.var_1_8) < 0 ) ? -(WrapperStruct0.var_1_8) : (WrapperStruct0.var_1_8))))) : 1) : ((WrapperStruct0.var_1_12 > WrapperStruct0.var_1_9) ? (WrapperStruct0.var_1_1 == ((double) WrapperStruct0.var_1_8)) : 1)) && ((-4 > last_1_WrapperStruct0_var_1_12) ? (((~ last_1_WrapperStruct0_var_1_12) <= last_1_WrapperStruct0_var_1_12) ? (WrapperStruct0.var_1_9 == ((signed char) ((((WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11) < 0 ) ? -(WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11) : (WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11))))) : 1) : (WrapperStruct0.var_1_9 == ((signed char) WrapperStruct0.var_1_10)))) && (((! WrapperStruct0.var_1_13) || WrapperStruct0.var_1_14) ? ((! WrapperStruct0.var_1_14) ? (WrapperStruct0.var_1_12 == ((signed long int) (((((((WrapperStruct0.var_1_9) < (WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_9) : (WrapperStruct0.var_1_9))) < 0 ) ? -((((WrapperStruct0.var_1_9) < (WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_9) : (WrapperStruct0.var_1_9))) : ((((WrapperStruct0.var_1_9) < (WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_9) : (WrapperStruct0.var_1_9))))))) : (WrapperStruct0.var_1_12 == ((signed long int) WrapperStruct0.var_1_9))) : 1)) && (WrapperStruct0.var_1_15 == ((double) WrapperStruct0.var_1_8)) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L95] EXPR ((((WrapperStruct0.var_1_15 <= WrapperStruct0.var_1_15) ? (((WrapperStruct0.var_1_12 + WrapperStruct0.var_1_12) >= (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_1 == ((double) ((((WrapperStruct0.var_1_8) < 0 ) ? -(WrapperStruct0.var_1_8) : (WrapperStruct0.var_1_8))))) : 1) : ((WrapperStruct0.var_1_12 > WrapperStruct0.var_1_9) ? (WrapperStruct0.var_1_1 == ((double) WrapperStruct0.var_1_8)) : 1)) && ((-4 > last_1_WrapperStruct0_var_1_12) ? (((~ last_1_WrapperStruct0_var_1_12) <= last_1_WrapperStruct0_var_1_12) ? (WrapperStruct0.var_1_9 == ((signed char) ((((WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11) < 0 ) ? -(WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11) : (WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11))))) : 1) : (WrapperStruct0.var_1_9 == ((signed char) WrapperStruct0.var_1_10)))) && (((! WrapperStruct0.var_1_13) || WrapperStruct0.var_1_14) ? ((! WrapperStruct0.var_1_14) ? (WrapperStruct0.var_1_12 == ((signed long int) (((((((WrapperStruct0.var_1_9) < (WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_9) : (WrapperStruct0.var_1_9))) < 0 ) ? -((((WrapperStruct0.var_1_9) < (WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_9) : (WrapperStruct0.var_1_9))) : ((((WrapperStruct0.var_1_9) < (WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_9) : (WrapperStruct0.var_1_9))))))) : (WrapperStruct0.var_1_12 == ((signed long int) WrapperStruct0.var_1_9))) : 1)) && (WrapperStruct0.var_1_15 == ((double) WrapperStruct0.var_1_8)) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L95-L96] return ((((WrapperStruct0.var_1_15 <= WrapperStruct0.var_1_15) ? (((WrapperStruct0.var_1_12 + WrapperStruct0.var_1_12) >= (WrapperStruct0.var_1_12 + WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_1 == ((double) ((((WrapperStruct0.var_1_8) < 0 ) ? -(WrapperStruct0.var_1_8) : (WrapperStruct0.var_1_8))))) : 1) : ((WrapperStruct0.var_1_12 > WrapperStruct0.var_1_9) ? (WrapperStruct0.var_1_1 == ((double) WrapperStruct0.var_1_8)) : 1)) && ((-4 > last_1_WrapperStruct0_var_1_12) ? (((~ last_1_WrapperStruct0_var_1_12) <= last_1_WrapperStruct0_var_1_12) ? (WrapperStruct0.var_1_9 == ((signed char) ((((WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11) < 0 ) ? -(WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11) : (WrapperStruct0.var_1_10 + WrapperStruct0.var_1_11))))) : 1) : (WrapperStruct0.var_1_9 == ((signed char) WrapperStruct0.var_1_10)))) && (((! WrapperStruct0.var_1_13) || WrapperStruct0.var_1_14) ? ((! WrapperStruct0.var_1_14) ? (WrapperStruct0.var_1_12 == ((signed long int) (((((((WrapperStruct0.var_1_9) < (WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_9) : (WrapperStruct0.var_1_9))) < 0 ) ? -((((WrapperStruct0.var_1_9) < (WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_9) : (WrapperStruct0.var_1_9))) : ((((WrapperStruct0.var_1_9) < (WrapperStruct0.var_1_9)) ? (WrapperStruct0.var_1_9) : (WrapperStruct0.var_1_9))))))) : (WrapperStruct0.var_1_12 == ((signed long int) WrapperStruct0.var_1_9))) : 1)) && (WrapperStruct0.var_1_15 == ((double) WrapperStruct0.var_1_8)) ; [L105] RET, EXPR property() [L105] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] [L19] reach_error() VAL [WrapperStruct0={4:0}, isInitial=1, last_1_WrapperStruct0_var_1_12=8] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 96 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 1287 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 758 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 529 mSDtfsCounter, 49 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 270 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=4, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 672 NumberOfCodeBlocks, 672 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 581 ConstructedInterpolants, 0 QuantifiedInterpolants, 615 SizeOfPredicates, 0 NumberOfNonLiveVariables, 863 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 974/1008 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 [2024-12-02 08:25:52,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/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_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-47.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b982617b4eafec7cbb1a277d4cd75e5591003436ed1218fbd6f7cc65704fea2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:25:54,256 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:25:54,334 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 08:25:54,340 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:25:54,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:25:54,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:25:54,361 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:25:54,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:25:54,362 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:25:54,362 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:25:54,362 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:25:54,362 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:25:54,363 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:25:54,363 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:25:54,363 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:25:54,363 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:25:54,363 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:25:54,363 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:25:54,363 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:25:54,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:25:54,363 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:25:54,363 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:25:54,363 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:25:54,364 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 08:25:54,364 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 08:25:54,364 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 08:25:54,364 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:25:54,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:25:54,364 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:25:54,364 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:25:54,364 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:25:54,364 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:25:54,364 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:25:54,364 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:25:54,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:25:54,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:25:54,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:25:54,365 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:25:54,365 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:25:54,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:25:54,365 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:25:54,365 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:25:54,365 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:25:54,365 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:25:54,366 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 08:25:54,366 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 08:25:54,366 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:25:54,366 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:25:54,366 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:25:54,366 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:25:54,366 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_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b982617b4eafec7cbb1a277d4cd75e5591003436ed1218fbd6f7cc65704fea2 [2024-12-02 08:25:54,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:25:54,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:25:54,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:25:54,607 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:25:54,607 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:25:54,609 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-47.i [2024-12-02 08:25:57,428 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/data/26b38e38d/2c82f9637c694961a32c5b83b4382409/FLAG804b1e20e [2024-12-02 08:25:57,619 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:25:57,619 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-47.i [2024-12-02 08:25:57,628 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/data/26b38e38d/2c82f9637c694961a32c5b83b4382409/FLAG804b1e20e [2024-12-02 08:25:57,978 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/data/26b38e38d/2c82f9637c694961a32c5b83b4382409 [2024-12-02 08:25:57,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:25:57,980 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:25:57,981 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:25:57,981 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:25:57,984 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:25:57,985 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:25:57" (1/1) ... [2024-12-02 08:25:57,985 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40712c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:57, skipping insertion in model container [2024-12-02 08:25:57,985 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:25:57" (1/1) ... [2024-12-02 08:25:57,997 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:25:58,111 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_58055362-9f92-4087-af5e-68a19f46dab2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-47.i[916,929] [2024-12-02 08:25:58,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:25:58,166 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:25:58,174 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_58055362-9f92-4087-af5e-68a19f46dab2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-47.i[916,929] [2024-12-02 08:25:58,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:25:58,229 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:25:58,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:58 WrapperNode [2024-12-02 08:25:58,229 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:25:58,231 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:25:58,231 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:25:58,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:25:58,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:58" (1/1) ... [2024-12-02 08:25:58,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:58" (1/1) ... [2024-12-02 08:25:58,279 INFO L138 Inliner]: procedures = 33, calls = 136, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 448 [2024-12-02 08:25:58,279 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:25:58,279 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:25:58,279 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:25:58,280 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:25:58,288 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:58" (1/1) ... [2024-12-02 08:25:58,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:58" (1/1) ... [2024-12-02 08:25:58,294 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:58" (1/1) ... [2024-12-02 08:25:58,312 INFO L175 MemorySlicer]: Split 115 memory accesses to 2 slices as follows [2, 113]. 98 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 9]. The 12 writes are split as follows [0, 12]. [2024-12-02 08:25:58,312 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:58" (1/1) ... [2024-12-02 08:25:58,312 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:58" (1/1) ... [2024-12-02 08:25:58,332 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:58" (1/1) ... [2024-12-02 08:25:58,334 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:58" (1/1) ... [2024-12-02 08:25:58,338 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:58" (1/1) ... [2024-12-02 08:25:58,341 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:58" (1/1) ... [2024-12-02 08:25:58,343 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:58" (1/1) ... [2024-12-02 08:25:58,347 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:25:58,348 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:25:58,348 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:25:58,348 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:25:58,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:58" (1/1) ... [2024-12-02 08:25:58,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:25:58,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:25:58,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:25:58,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:25:58,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:25:58,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2024-12-02 08:25:58,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2024-12-02 08:25:58,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2024-12-02 08:25:58,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2024-12-02 08:25:58,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-12-02 08:25:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-12-02 08:25:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 08:25:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-12-02 08:25:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-12-02 08:25:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-12-02 08:25:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2024-12-02 08:25:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2024-12-02 08:25:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-12-02 08:25:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-12-02 08:25:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 08:25:58,399 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 08:25:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:25:58,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:25:58,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-12-02 08:25:58,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-12-02 08:25:58,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-12-02 08:25:58,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-12-02 08:25:58,507 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:25:58,508 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:25:59,077 INFO L? ?]: Removed 132 outVars from TransFormulas that were not future-live. [2024-12-02 08:25:59,077 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:25:59,089 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:25:59,089 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 08:25:59,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:25:59 BoogieIcfgContainer [2024-12-02 08:25:59,089 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:25:59,091 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:25:59,091 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:25:59,095 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:25:59,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:25:57" (1/3) ... [2024-12-02 08:25:59,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c26442d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:25:59, skipping insertion in model container [2024-12-02 08:25:59,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:25:58" (2/3) ... [2024-12-02 08:25:59,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c26442d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:25:59, skipping insertion in model container [2024-12-02 08:25:59,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:25:59" (3/3) ... [2024-12-02 08:25:59,097 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-47.i [2024-12-02 08:25:59,107 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:25:59,109 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-s_file-47.i that has 2 procedures, 96 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 08:25:59,147 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:25:59,157 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;@62e92ec5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:25:59,157 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 08:25:59,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 84 states have (on average 1.4642857142857142) internal successors, (123), 85 states have internal predecessors, (123), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-12-02 08:25:59,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 08:25:59,178 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:25:59,178 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:25:59,179 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:25:59,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:25:59,183 INFO L85 PathProgramCache]: Analyzing trace with hash -766083450, now seen corresponding path program 1 times [2024-12-02 08:25:59,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:25:59,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550252585] [2024-12-02 08:25:59,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:25:59,192 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 [2024-12-02 08:25:59,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:25:59,194 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:25:59,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:25:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:25:59,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 08:25:59,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:25:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-12-02 08:25:59,488 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:25:59,489 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:25:59,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550252585] [2024-12-02 08:25:59,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550252585] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:25:59,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:25:59,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:25:59,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860291905] [2024-12-02 08:25:59,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:25:59,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:25:59,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:25:59,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:25:59,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:25:59,517 INFO L87 Difference]: Start difference. First operand has 96 states, 84 states have (on average 1.4642857142857142) internal successors, (123), 85 states have internal predecessors, (123), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 08:25:59,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:25:59,541 INFO L93 Difference]: Finished difference Result 185 states and 285 transitions. [2024-12-02 08:25:59,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:25:59,543 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 84 [2024-12-02 08:25:59,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:25:59,550 INFO L225 Difference]: With dead ends: 185 [2024-12-02 08:25:59,550 INFO L226 Difference]: Without dead ends: 92 [2024-12-02 08:25:59,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:25:59,556 INFO L435 NwaCegarLoop]: 134 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, 134 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:25:59,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:25:59,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-12-02 08:25:59,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-12-02 08:25:59,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 81 states have internal predecessors, (116), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-12-02 08:25:59,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 134 transitions. [2024-12-02 08:25:59,593 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 134 transitions. Word has length 84 [2024-12-02 08:25:59,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:25:59,594 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 134 transitions. [2024-12-02 08:25:59,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 08:25:59,595 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 134 transitions. [2024-12-02 08:25:59,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 08:25:59,597 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:25:59,597 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:25:59,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:25:59,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:25:59,798 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:25:59,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:25:59,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1428001612, now seen corresponding path program 1 times [2024-12-02 08:25:59,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:25:59,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894940557] [2024-12-02 08:25:59,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:25:59,800 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 [2024-12-02 08:25:59,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:25:59,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:25:59,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:26:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:26:00,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 08:26:00,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:26:00,050 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:26:00,050 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:26:00,050 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:26:00,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894940557] [2024-12-02 08:26:00,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894940557] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:26:00,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:26:00,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:26:00,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974708965] [2024-12-02 08:26:00,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:26:00,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:26:00,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:26:00,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:26:00,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:26:00,054 INFO L87 Difference]: Start difference. First operand 92 states and 134 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:26:00,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:26:00,091 INFO L93 Difference]: Finished difference Result 182 states and 267 transitions. [2024-12-02 08:26:00,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:26:00,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 84 [2024-12-02 08:26:00,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:26:00,094 INFO L225 Difference]: With dead ends: 182 [2024-12-02 08:26:00,094 INFO L226 Difference]: Without dead ends: 93 [2024-12-02 08:26:00,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:26:00,096 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 0 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:26:00,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 260 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:26:00,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-12-02 08:26:00,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-12-02 08:26:00,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 82 states have (on average 1.4268292682926829) internal successors, (117), 82 states have internal predecessors, (117), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-12-02 08:26:00,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 135 transitions. [2024-12-02 08:26:00,105 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 135 transitions. Word has length 84 [2024-12-02 08:26:00,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:26:00,107 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 135 transitions. [2024-12-02 08:26:00,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:26:00,107 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 135 transitions. [2024-12-02 08:26:00,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 08:26:00,108 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:26:00,108 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:26:00,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-12-02 08:26:00,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:26:00,309 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:26:00,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:26:00,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1178021942, now seen corresponding path program 1 times [2024-12-02 08:26:00,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:26:00,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344586066] [2024-12-02 08:26:00,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:26:00,310 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 [2024-12-02 08:26:00,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:26:00,312 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:26:00,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:26:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:26:00,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 08:26:00,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:26:00,617 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:26:00,617 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:26:00,617 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:26:00,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344586066] [2024-12-02 08:26:00,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344586066] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:26:00,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:26:00,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:26:00,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312473279] [2024-12-02 08:26:00,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:26:00,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:26:00,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:26:00,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:26:00,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:26:00,619 INFO L87 Difference]: Start difference. First operand 93 states and 135 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:26:00,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:26:00,672 INFO L93 Difference]: Finished difference Result 186 states and 271 transitions. [2024-12-02 08:26:00,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:26:00,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 84 [2024-12-02 08:26:00,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:26:00,674 INFO L225 Difference]: With dead ends: 186 [2024-12-02 08:26:00,674 INFO L226 Difference]: Without dead ends: 96 [2024-12-02 08:26:00,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:26:00,675 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:26:00,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 509 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:26:00,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-12-02 08:26:00,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-12-02 08:26:00,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 85 states have (on average 1.411764705882353) internal successors, (120), 85 states have internal predecessors, (120), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-12-02 08:26:00,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 138 transitions. [2024-12-02 08:26:00,684 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 138 transitions. Word has length 84 [2024-12-02 08:26:00,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:26:00,684 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 138 transitions. [2024-12-02 08:26:00,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:26:00,685 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 138 transitions. [2024-12-02 08:26:00,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 08:26:00,686 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:26:00,686 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:26:00,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:26:00,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:26:00,887 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:26:00,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:26:00,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1605540184, now seen corresponding path program 1 times [2024-12-02 08:26:00,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:26:00,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288808468] [2024-12-02 08:26:00,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:26:00,888 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 [2024-12-02 08:26:00,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:26:00,890 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:26:00,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:26:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:26:01,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 08:26:01,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:26:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:26:01,131 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:26:01,132 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:26:01,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288808468] [2024-12-02 08:26:01,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288808468] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:26:01,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:26:01,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:26:01,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494640159] [2024-12-02 08:26:01,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:26:01,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:26:01,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:26:01,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:26:01,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:26:01,134 INFO L87 Difference]: Start difference. First operand 96 states and 138 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:26:01,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:26:01,182 INFO L93 Difference]: Finished difference Result 194 states and 280 transitions. [2024-12-02 08:26:01,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:26:01,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 84 [2024-12-02 08:26:01,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:26:01,184 INFO L225 Difference]: With dead ends: 194 [2024-12-02 08:26:01,184 INFO L226 Difference]: Without dead ends: 101 [2024-12-02 08:26:01,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:26:01,185 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 1 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:26:01,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 503 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:26:01,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-12-02 08:26:01,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2024-12-02 08:26:01,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 89 states have (on average 1.3932584269662922) internal successors, (124), 89 states have internal predecessors, (124), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-12-02 08:26:01,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 142 transitions. [2024-12-02 08:26:01,193 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 142 transitions. Word has length 84 [2024-12-02 08:26:01,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:26:01,194 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 142 transitions. [2024-12-02 08:26:01,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:26:01,195 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 142 transitions. [2024-12-02 08:26:01,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 08:26:01,196 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:26:01,196 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:26:01,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:26:01,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:26:01,397 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:26:01,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:26:01,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1603693142, now seen corresponding path program 1 times [2024-12-02 08:26:01,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:26:01,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108328848] [2024-12-02 08:26:01,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:26:01,398 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 [2024-12-02 08:26:01,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:26:01,400 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:26:01,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:26:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:26:01,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 08:26:01,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:26:01,759 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 [2024-12-02 08:26:02,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:02,054 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 127 treesize of output 69 [2024-12-02 08:26:02,372 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:02,373 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 137 treesize of output 82 [2024-12-02 08:26:02,779 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:02,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 147 treesize of output 95 [2024-12-02 08:26:03,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:03,277 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 162 treesize of output 98 [2024-12-02 08:26:03,683 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:03,683 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 164 treesize of output 109 [2024-12-02 08:26:04,017 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:04,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 217 treesize of output 79 [2024-12-02 08:26:04,131 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 08:26:04,132 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:26:04,132 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:26:04,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108328848] [2024-12-02 08:26:04,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108328848] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:26:04,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:26:04,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 08:26:04,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906013128] [2024-12-02 08:26:04,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:26:04,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 08:26:04,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:26:04,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 08:26:04,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:26:04,134 INFO L87 Difference]: Start difference. First operand 100 states and 142 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-12-02 08:26:06,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:26:06,841 INFO L93 Difference]: Finished difference Result 366 states and 513 transitions. [2024-12-02 08:26:06,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 08:26:06,842 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 84 [2024-12-02 08:26:06,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:26:06,843 INFO L225 Difference]: With dead ends: 366 [2024-12-02 08:26:06,843 INFO L226 Difference]: Without dead ends: 269 [2024-12-02 08:26:06,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2024-12-02 08:26:06,844 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 708 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:26:06,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 446 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 08:26:06,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-12-02 08:26:06,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 155. [2024-12-02 08:26:06,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 131 states have (on average 1.3511450381679388) internal successors, (177), 131 states have internal predecessors, (177), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-12-02 08:26:06,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 213 transitions. [2024-12-02 08:26:06,862 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 213 transitions. Word has length 84 [2024-12-02 08:26:06,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:26:06,862 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 213 transitions. [2024-12-02 08:26:06,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-12-02 08:26:06,863 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 213 transitions. [2024-12-02 08:26:06,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 08:26:06,864 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:26:06,864 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:26:06,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:26:07,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:26:07,065 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:26:07,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:26:07,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1303975955, now seen corresponding path program 1 times [2024-12-02 08:26:07,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:26:07,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723310005] [2024-12-02 08:26:07,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:26:07,066 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 [2024-12-02 08:26:07,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:26:07,068 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:26:07,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:26:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:26:07,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 08:26:07,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:26:07,373 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:07,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 46 [2024-12-02 08:26:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:26:07,457 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:26:07,457 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:26:07,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723310005] [2024-12-02 08:26:07,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723310005] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:26:07,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:26:07,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:26:07,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069025110] [2024-12-02 08:26:07,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:26:07,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:26:07,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:26:07,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:26:07,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:26:07,459 INFO L87 Difference]: Start difference. First operand 155 states and 213 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:26:12,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:26:15,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:26:15,220 INFO L93 Difference]: Finished difference Result 451 states and 620 transitions. [2024-12-02 08:26:15,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:26:15,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 84 [2024-12-02 08:26:15,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:26:15,222 INFO L225 Difference]: With dead ends: 451 [2024-12-02 08:26:15,222 INFO L226 Difference]: Without dead ends: 299 [2024-12-02 08:26:15,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:26:15,224 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 113 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-12-02 08:26:15,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 255 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 271 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2024-12-02 08:26:15,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-12-02 08:26:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 157. [2024-12-02 08:26:15,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 133 states have (on average 1.3458646616541354) internal successors, (179), 133 states have internal predecessors, (179), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-12-02 08:26:15,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 215 transitions. [2024-12-02 08:26:15,246 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 215 transitions. Word has length 84 [2024-12-02 08:26:15,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:26:15,246 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 215 transitions. [2024-12-02 08:26:15,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:26:15,246 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 215 transitions. [2024-12-02 08:26:15,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 08:26:15,248 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:26:15,248 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:26:15,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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)] Ended with exit code 0 [2024-12-02 08:26:15,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:26:15,448 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:26:15,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:26:15,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1363453396, now seen corresponding path program 1 times [2024-12-02 08:26:15,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:26:15,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973581915] [2024-12-02 08:26:15,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:26:15,449 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 [2024-12-02 08:26:15,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:26:15,451 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:26:15,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:26:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:26:15,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 08:26:15,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:26:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:26:15,616 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:26:15,616 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:26:15,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973581915] [2024-12-02 08:26:15,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973581915] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:26:15,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:26:15,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:26:15,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648997223] [2024-12-02 08:26:15,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:26:15,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:26:15,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:26:15,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:26:15,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:26:15,618 INFO L87 Difference]: Start difference. First operand 157 states and 215 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:26:15,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:26:15,679 INFO L93 Difference]: Finished difference Result 311 states and 427 transitions. [2024-12-02 08:26:15,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:26:15,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 84 [2024-12-02 08:26:15,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:26:15,681 INFO L225 Difference]: With dead ends: 311 [2024-12-02 08:26:15,681 INFO L226 Difference]: Without dead ends: 157 [2024-12-02 08:26:15,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:26:15,682 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:26:15,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 389 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:26:15,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-12-02 08:26:15,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2024-12-02 08:26:15,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 133 states have (on average 1.3383458646616542) internal successors, (178), 133 states have internal predecessors, (178), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-12-02 08:26:15,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 214 transitions. [2024-12-02 08:26:15,705 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 214 transitions. Word has length 84 [2024-12-02 08:26:15,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:26:15,705 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 214 transitions. [2024-12-02 08:26:15,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:26:15,705 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 214 transitions. [2024-12-02 08:26:15,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 08:26:15,707 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:26:15,707 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:26:15,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-12-02 08:26:15,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:26:15,907 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:26:15,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:26:15,908 INFO L85 PathProgramCache]: Analyzing trace with hash -760820634, now seen corresponding path program 1 times [2024-12-02 08:26:15,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:26:15,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628588399] [2024-12-02 08:26:15,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:26:15,908 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 [2024-12-02 08:26:15,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:26:15,909 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:26:15,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:26:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:26:16,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 08:26:16,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:26:16,139 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:16,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 24 [2024-12-02 08:26:16,177 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:26:16,177 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:26:16,177 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:26:16,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628588399] [2024-12-02 08:26:16,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628588399] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:26:16,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:26:16,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:26:16,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585834110] [2024-12-02 08:26:16,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:26:16,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:26:16,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:26:16,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:26:16,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:26:16,178 INFO L87 Difference]: Start difference. First operand 157 states and 214 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:26:17,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:26:17,272 INFO L93 Difference]: Finished difference Result 460 states and 629 transitions. [2024-12-02 08:26:17,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:26:17,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 86 [2024-12-02 08:26:17,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:26:17,275 INFO L225 Difference]: With dead ends: 460 [2024-12-02 08:26:17,275 INFO L226 Difference]: Without dead ends: 306 [2024-12-02 08:26:17,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:26:17,275 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 112 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:26:17,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 319 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 08:26:17,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-12-02 08:26:17,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 282. [2024-12-02 08:26:17,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 235 states have (on average 1.3148936170212766) internal successors, (309), 235 states have internal predecessors, (309), 36 states have call successors, (36), 10 states have call predecessors, (36), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-12-02 08:26:17,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 381 transitions. [2024-12-02 08:26:17,311 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 381 transitions. Word has length 86 [2024-12-02 08:26:17,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:26:17,311 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 381 transitions. [2024-12-02 08:26:17,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:26:17,312 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 381 transitions. [2024-12-02 08:26:17,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 08:26:17,313 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:26:17,313 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:26:17,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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)] Forceful destruction successful, exit code 0 [2024-12-02 08:26:17,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:26:17,513 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:26:17,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:26:17,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1522767668, now seen corresponding path program 1 times [2024-12-02 08:26:17,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:26:17,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886527733] [2024-12-02 08:26:17,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:26:17,514 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 [2024-12-02 08:26:17,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:26:17,516 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:26:17,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:26:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:26:17,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 08:26:17,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:26:17,715 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 [2024-12-02 08:26:17,844 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 37 treesize of output 30 [2024-12-02 08:26:17,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:17,991 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 [2024-12-02 08:26:18,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:18,102 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 [2024-12-02 08:26:18,231 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:18,232 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 54 treesize of output 44 [2024-12-02 08:26:18,331 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:18,331 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 75 treesize of output 57 [2024-12-02 08:26:21,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:21,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 108 treesize of output 48 [2024-12-02 08:26:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-12-02 08:26:21,367 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:26:21,522 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:26:21,522 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:26:21,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886527733] [2024-12-02 08:26:21,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886527733] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:26:21,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:26:21,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 18 [2024-12-02 08:26:21,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242512627] [2024-12-02 08:26:21,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:26:21,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:26:21,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:26:21,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:26:21,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=254, Unknown=1, NotChecked=0, Total=306 [2024-12-02 08:26:21,523 INFO L87 Difference]: Start difference. First operand 282 states and 381 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:26:22,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:26:22,224 INFO L93 Difference]: Finished difference Result 722 states and 976 transitions. [2024-12-02 08:26:22,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:26:22,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 86 [2024-12-02 08:26:22,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:26:22,228 INFO L225 Difference]: With dead ends: 722 [2024-12-02 08:26:22,228 INFO L226 Difference]: Without dead ends: 443 [2024-12-02 08:26:22,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=63, Invalid=356, Unknown=1, NotChecked=0, Total=420 [2024-12-02 08:26:22,229 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 86 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:26:22,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 397 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 08:26:22,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-12-02 08:26:22,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 427. [2024-12-02 08:26:22,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 376 states have (on average 1.3430851063829787) internal successors, (505), 378 states have internal predecessors, (505), 38 states have call successors, (38), 12 states have call predecessors, (38), 12 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2024-12-02 08:26:22,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 581 transitions. [2024-12-02 08:26:22,273 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 581 transitions. Word has length 86 [2024-12-02 08:26:22,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:26:22,274 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 581 transitions. [2024-12-02 08:26:22,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:26:22,274 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 581 transitions. [2024-12-02 08:26:22,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 08:26:22,275 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:26:22,275 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:26:22,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-12-02 08:26:22,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:26:22,476 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:26:22,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:26:22,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1963105168, now seen corresponding path program 1 times [2024-12-02 08:26:22,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:26:22,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765067084] [2024-12-02 08:26:22,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:26:22,477 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 [2024-12-02 08:26:22,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:26:22,478 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:26:22,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:26:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:26:22,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 08:26:22,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:26:22,753 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 [2024-12-02 08:26:23,065 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:23,065 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 125 treesize of output 67 [2024-12-02 08:26:23,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:23,285 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 140 treesize of output 70 [2024-12-02 08:26:23,453 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:23,454 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 140 treesize of output 70 [2024-12-02 08:26:23,615 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:23,615 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 140 treesize of output 70 [2024-12-02 08:26:23,803 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:23,803 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 142 treesize of output 81 [2024-12-02 08:26:23,970 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:23,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 195 treesize of output 69 [2024-12-02 08:26:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 08:26:24,052 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:26:24,339 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:26:24,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765067084] [2024-12-02 08:26:24,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765067084] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:26:24,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1229843404] [2024-12-02 08:26:24,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:26:24,339 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 08:26:24,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 08:26:24,341 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 08:26:24,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-12-02 08:26:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:26:25,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-12-02 08:26:25,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:26:25,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 8 [2024-12-02 08:26:32,032 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:32,032 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 107 treesize of output 65 [2024-12-02 08:26:32,398 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:32,398 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 97 treesize of output 82 [2024-12-02 08:26:32,824 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:32,824 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 105 treesize of output 93 [2024-12-02 08:26:33,296 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:33,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 116 treesize of output 96 [2024-12-02 08:26:33,655 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:33,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 118 treesize of output 105 [2024-12-02 08:26:33,968 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:33,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 156 treesize of output 88 [2024-12-02 08:26:38,390 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 88 proven. 24 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 08:26:38,391 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:26:38,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1229843404] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:26:38,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:26:38,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 26 [2024-12-02 08:26:38,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57308257] [2024-12-02 08:26:38,537 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:26:38,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-12-02 08:26:38,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:26:38,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-12-02 08:26:38,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=673, Unknown=2, NotChecked=0, Total=812 [2024-12-02 08:26:38,538 INFO L87 Difference]: Start difference. First operand 427 states and 581 transitions. Second operand has 27 states, 25 states have (on average 3.4) internal successors, (85), 22 states have internal predecessors, (85), 6 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-12-02 08:26:45,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:26:45,584 INFO L93 Difference]: Finished difference Result 1153 states and 1555 transitions. [2024-12-02 08:26:45,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 08:26:45,585 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.4) internal successors, (85), 22 states have internal predecessors, (85), 6 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 86 [2024-12-02 08:26:45,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:26:45,588 INFO L225 Difference]: With dead ends: 1153 [2024-12-02 08:26:45,588 INFO L226 Difference]: Without dead ends: 729 [2024-12-02 08:26:45,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 189 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=464, Invalid=1790, Unknown=2, NotChecked=0, Total=2256 [2024-12-02 08:26:45,589 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 551 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:26:45,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 836 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-12-02 08:26:45,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-12-02 08:26:45,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 429. [2024-12-02 08:26:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 378 states have (on average 1.3412698412698412) internal successors, (507), 380 states have internal predecessors, (507), 38 states have call successors, (38), 12 states have call predecessors, (38), 12 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2024-12-02 08:26:45,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 583 transitions. [2024-12-02 08:26:45,648 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 583 transitions. Word has length 86 [2024-12-02 08:26:45,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:26:45,648 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 583 transitions. [2024-12-02 08:26:45,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.4) internal successors, (85), 22 states have internal predecessors, (85), 6 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-12-02 08:26:45,649 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 583 transitions. [2024-12-02 08:26:45,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 08:26:45,650 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:26:45,650 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:26:45,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-12-02 08:26:45,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:26:46,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:26:46,051 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:26:46,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:26:46,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1124071506, now seen corresponding path program 1 times [2024-12-02 08:26:46,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:26:46,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548743734] [2024-12-02 08:26:46,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:26:46,052 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 [2024-12-02 08:26:46,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:26:46,054 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:26:46,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:26:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:26:46,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 08:26:46,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:26:46,270 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 08:26:46,270 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:26:46,270 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:26:46,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548743734] [2024-12-02 08:26:46,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548743734] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:26:46,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:26:46,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:26:46,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846299153] [2024-12-02 08:26:46,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:26:46,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:26:46,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:26:46,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:26:46,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:26:46,271 INFO L87 Difference]: Start difference. First operand 429 states and 583 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 08:26:46,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:26:46,441 INFO L93 Difference]: Finished difference Result 765 states and 1023 transitions. [2024-12-02 08:26:46,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:26:46,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2024-12-02 08:26:46,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:26:46,443 INFO L225 Difference]: With dead ends: 765 [2024-12-02 08:26:46,444 INFO L226 Difference]: Without dead ends: 315 [2024-12-02 08:26:46,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:26:46,445 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 1 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:26:46,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 553 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:26:46,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-12-02 08:26:46,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 239. [2024-12-02 08:26:46,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 212 states have (on average 1.2971698113207548) internal successors, (275), 212 states have internal predecessors, (275), 18 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-12-02 08:26:46,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 311 transitions. [2024-12-02 08:26:46,479 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 311 transitions. Word has length 86 [2024-12-02 08:26:46,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:26:46,479 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 311 transitions. [2024-12-02 08:26:46,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 08:26:46,480 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 311 transitions. [2024-12-02 08:26:46,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 08:26:46,481 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:26:46,481 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:26:46,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:26:46,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:26:46,681 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:26:46,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:26:46,682 INFO L85 PathProgramCache]: Analyzing trace with hash -513934107, now seen corresponding path program 1 times [2024-12-02 08:26:46,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:26:46,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956542520] [2024-12-02 08:26:46,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:26:46,682 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 [2024-12-02 08:26:46,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:26:46,684 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:26:46,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:26:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:26:46,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 08:26:46,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:26:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:26:46,979 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:26:46,979 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:26:46,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956542520] [2024-12-02 08:26:46,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956542520] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:26:46,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:26:46,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:26:46,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361594989] [2024-12-02 08:26:46,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:26:46,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:26:46,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:26:46,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:26:46,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:26:46,980 INFO L87 Difference]: Start difference. First operand 239 states and 311 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:26:47,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:26:47,378 INFO L93 Difference]: Finished difference Result 723 states and 938 transitions. [2024-12-02 08:26:47,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:26:47,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 87 [2024-12-02 08:26:47,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:26:47,380 INFO L225 Difference]: With dead ends: 723 [2024-12-02 08:26:47,381 INFO L226 Difference]: Without dead ends: 487 [2024-12-02 08:26:47,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:26:47,381 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 209 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:26:47,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 248 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:26:47,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2024-12-02 08:26:47,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 365. [2024-12-02 08:26:47,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 325 states have (on average 1.28) internal successors, (416), 325 states have internal predecessors, (416), 27 states have call successors, (27), 12 states have call predecessors, (27), 12 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-12-02 08:26:47,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 470 transitions. [2024-12-02 08:26:47,438 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 470 transitions. Word has length 87 [2024-12-02 08:26:47,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:26:47,438 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 470 transitions. [2024-12-02 08:26:47,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:26:47,439 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 470 transitions. [2024-12-02 08:26:47,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-02 08:26:47,440 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:26:47,440 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:26:47,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:26:47,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:26:47,640 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:26:47,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:26:47,641 INFO L85 PathProgramCache]: Analyzing trace with hash 561473697, now seen corresponding path program 1 times [2024-12-02 08:26:47,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:26:47,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48313799] [2024-12-02 08:26:47,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:26:47,641 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 [2024-12-02 08:26:47,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:26:47,643 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:26:47,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:26:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:26:47,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-12-02 08:26:47,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:26:47,950 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 [2024-12-02 08:26:48,364 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:48,364 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 132 treesize of output 59 [2024-12-02 08:26:48,619 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:48,619 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 127 treesize of output 69 [2024-12-02 08:26:48,993 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:48,993 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 137 treesize of output 82 [2024-12-02 08:26:49,490 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:49,491 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 152 treesize of output 85 [2024-12-02 08:26:49,960 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:49,960 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 154 treesize of output 105 [2024-12-02 08:26:50,248 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:50,249 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 118 [2024-12-02 08:26:54,937 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:54,938 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 161 [2024-12-02 08:26:55,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:26:55,706 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 386 treesize of output 136 [2024-12-02 08:26:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 08:26:56,005 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:26:56,005 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:26:56,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48313799] [2024-12-02 08:26:56,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48313799] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:26:56,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:26:56,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 08:26:56,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849216373] [2024-12-02 08:26:56,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:26:56,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 08:26:56,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:26:56,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 08:26:56,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=263, Unknown=1, NotChecked=0, Total=342 [2024-12-02 08:26:56,006 INFO L87 Difference]: Start difference. First operand 365 states and 470 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 08:27:00,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:04,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:08,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:12,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:16,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:20,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:24,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:28,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:32,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:36,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:40,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:44,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:49,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:53,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:57,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:28:01,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:28:05,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:28:09,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:28:13,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:28:18,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:28:18,264 INFO L93 Difference]: Finished difference Result 1153 states and 1493 transitions. [2024-12-02 08:28:18,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 08:28:18,265 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 88 [2024-12-02 08:28:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:28:18,269 INFO L225 Difference]: With dead ends: 1153 [2024-12-02 08:28:18,269 INFO L226 Difference]: Without dead ends: 791 [2024-12-02 08:28:18,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=201, Invalid=854, Unknown=1, NotChecked=0, Total=1056 [2024-12-02 08:28:18,271 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 614 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 28 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:28:18,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 935 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1354 Invalid, 19 Unknown, 0 Unchecked, 80.5s Time] [2024-12-02 08:28:18,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2024-12-02 08:28:18,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 527. [2024-12-02 08:28:18,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 448 states have (on average 1.2522321428571428) internal successors, (561), 448 states have internal predecessors, (561), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 08:28:18,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 669 transitions. [2024-12-02 08:28:18,369 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 669 transitions. Word has length 88 [2024-12-02 08:28:18,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:28:18,372 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 669 transitions. [2024-12-02 08:28:18,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 08:28:18,373 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 669 transitions. [2024-12-02 08:28:18,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 08:28:18,373 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:28:18,373 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:28:18,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2024-12-02 08:28:18,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:28:18,574 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:28:18,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:28:18,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1436083919, now seen corresponding path program 1 times [2024-12-02 08:28:18,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:28:18,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694397099] [2024-12-02 08:28:18,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:28:18,575 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 [2024-12-02 08:28:18,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:28:18,576 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:28:18,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:28:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:28:18,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 08:28:18,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:28:18,738 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:28:18,739 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:28:18,739 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:28:18,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694397099] [2024-12-02 08:28:18,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694397099] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:28:18,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:28:18,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:28:18,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758167955] [2024-12-02 08:28:18,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:28:18,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:28:18,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:28:18,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:28:18,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:28:18,740 INFO L87 Difference]: Start difference. First operand 527 states and 669 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:28:18,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:28:18,809 INFO L93 Difference]: Finished difference Result 1054 states and 1341 transitions. [2024-12-02 08:28:18,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:28:18,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 89 [2024-12-02 08:28:18,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:28:18,812 INFO L225 Difference]: With dead ends: 1054 [2024-12-02 08:28:18,812 INFO L226 Difference]: Without dead ends: 530 [2024-12-02 08:28:18,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:28:18,813 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 0 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:28:18,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:28:18,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-12-02 08:28:18,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2024-12-02 08:28:18,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 451 states have (on average 1.2505543237250554) internal successors, (564), 451 states have internal predecessors, (564), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 08:28:18,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 672 transitions. [2024-12-02 08:28:18,914 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 672 transitions. Word has length 89 [2024-12-02 08:28:18,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:28:18,914 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 672 transitions. [2024-12-02 08:28:18,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:28:18,914 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 672 transitions. [2024-12-02 08:28:18,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 08:28:18,915 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:28:18,915 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:28:18,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:28:19,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:28:19,116 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:28:19,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:28:19,116 INFO L85 PathProgramCache]: Analyzing trace with hash 2116142289, now seen corresponding path program 1 times [2024-12-02 08:28:19,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:28:19,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414718632] [2024-12-02 08:28:19,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:28:19,117 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 [2024-12-02 08:28:19,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:28:19,118 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:28:19,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:28:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:28:19,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 08:28:19,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:28:19,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2024-12-02 08:28:19,867 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:28:19,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 77 [2024-12-02 08:28:20,269 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:28:20,269 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 [2024-12-02 08:28:20,591 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:28:20,591 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 [2024-12-02 08:28:20,930 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:28:20,930 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 [2024-12-02 08:28:21,448 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:28:21,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 64 [2024-12-02 08:28:21,710 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 0 case distinctions, treesize of input 135 treesize of output 108 [2024-12-02 08:28:23,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:28:23,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 376 treesize of output 130 [2024-12-02 08:28:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-12-02 08:28:23,711 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:28:23,711 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:28:23,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414718632] [2024-12-02 08:28:23,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414718632] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:28:23,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:28:23,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 08:28:23,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842998162] [2024-12-02 08:28:23,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:28:23,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 08:28:23,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:28:23,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 08:28:23,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-12-02 08:28:23,712 INFO L87 Difference]: Start difference. First operand 530 states and 672 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 08:28:29,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:28:29,501 INFO L93 Difference]: Finished difference Result 784 states and 1001 transitions. [2024-12-02 08:28:29,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 08:28:29,502 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2024-12-02 08:28:29,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:28:29,504 INFO L225 Difference]: With dead ends: 784 [2024-12-02 08:28:29,504 INFO L226 Difference]: Without dead ends: 782 [2024-12-02 08:28:29,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=154, Invalid=548, Unknown=0, NotChecked=0, Total=702 [2024-12-02 08:28:29,505 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 453 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:28:29,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 607 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-12-02 08:28:29,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2024-12-02 08:28:29,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 648. [2024-12-02 08:28:29,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 566 states have (on average 1.256183745583039) internal successors, (711), 566 states have internal predecessors, (711), 54 states have call successors, (54), 27 states have call predecessors, (54), 27 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 08:28:29,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 819 transitions. [2024-12-02 08:28:29,585 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 819 transitions. Word has length 89 [2024-12-02 08:28:29,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:28:29,586 INFO L471 AbstractCegarLoop]: Abstraction has 648 states and 819 transitions. [2024-12-02 08:28:29,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 08:28:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 819 transitions. [2024-12-02 08:28:29,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 08:28:29,587 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:28:29,587 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:28:29,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-12-02 08:28:29,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:28:29,788 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:28:29,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:28:29,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2117989331, now seen corresponding path program 1 times [2024-12-02 08:28:29,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:28:29,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3773197] [2024-12-02 08:28:29,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:28:29,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:28:29,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:28:29,790 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:28:29,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:28:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:28:29,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 08:28:29,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:28:29,974 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:28:29,974 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:28:29,974 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:28:29,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3773197] [2024-12-02 08:28:29,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3773197] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:28:29,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:28:29,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:28:29,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841570230] [2024-12-02 08:28:29,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:28:29,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:28:29,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:28:29,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:28:29,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:28:29,975 INFO L87 Difference]: Start difference. First operand 648 states and 819 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:28:30,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:28:30,090 INFO L93 Difference]: Finished difference Result 1311 states and 1659 transitions. [2024-12-02 08:28:30,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:28:30,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 89 [2024-12-02 08:28:30,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:28:30,092 INFO L225 Difference]: With dead ends: 1311 [2024-12-02 08:28:30,092 INFO L226 Difference]: Without dead ends: 666 [2024-12-02 08:28:30,093 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:28:30,093 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 0 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:28:30,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 477 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:28:30,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-12-02 08:28:30,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2024-12-02 08:28:30,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 584 states have (on average 1.2482876712328768) internal successors, (729), 584 states have internal predecessors, (729), 54 states have call successors, (54), 27 states have call predecessors, (54), 27 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 08:28:30,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 837 transitions. [2024-12-02 08:28:30,169 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 837 transitions. Word has length 89 [2024-12-02 08:28:30,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:28:30,170 INFO L471 AbstractCegarLoop]: Abstraction has 666 states and 837 transitions. [2024-12-02 08:28:30,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:28:30,170 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 837 transitions. [2024-12-02 08:28:30,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 08:28:30,171 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:28:30,171 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:28:30,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-12-02 08:28:30,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:28:30,371 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:28:30,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:28:30,371 INFO L85 PathProgramCache]: Analyzing trace with hash -329620377, now seen corresponding path program 1 times [2024-12-02 08:28:30,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:28:30,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056337830] [2024-12-02 08:28:30,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:28:30,372 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 [2024-12-02 08:28:30,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:28:30,374 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:28:30,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:28:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:28:30,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 08:28:30,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:28:30,651 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 [2024-12-02 08:28:31,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:28:31,299 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 130 treesize of output 57 [2024-12-02 08:28:31,563 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:28:31,563 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 125 treesize of output 67 [2024-12-02 08:28:32,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:28:32,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 80 [2024-12-02 08:28:32,605 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:28:32,605 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 145 treesize of output 93 [2024-12-02 08:28:33,357 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:28:33,357 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 162 treesize of output 116 [2024-12-02 08:28:33,766 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:28:33,766 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 183 treesize of output 129 [2024-12-02 08:28:37,866 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:28:37,867 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 219 treesize of output 75 [2024-12-02 08:28:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 104 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 08:28:37,979 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:28:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-12-02 08:28:38,486 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:28:38,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056337830] [2024-12-02 08:28:38,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056337830] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:28:38,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:28:38,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 22 [2024-12-02 08:28:38,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017512688] [2024-12-02 08:28:38,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:28:38,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 08:28:38,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:28:38,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 08:28:38,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=341, Unknown=1, NotChecked=0, Total=462 [2024-12-02 08:28:38,488 INFO L87 Difference]: Start difference. First operand 666 states and 837 transitions. Second operand has 22 states, 20 states have (on average 4.7) internal successors, (94), 21 states have internal predecessors, (94), 7 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (18), 5 states have call predecessors, (18), 7 states have call successors, (18) [2024-12-02 08:28:45,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:28:49,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:28:53,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:28:57,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:29:01,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:29:05,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:29:09,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:29:14,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:29:18,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:29:22,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:29:26,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:29:30,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:29:34,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:29:38,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:29:42,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:29:46,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:29:50,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:29:54,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:29:58,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:30:00,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:30:00,084 INFO L93 Difference]: Finished difference Result 1557 states and 1962 transitions. [2024-12-02 08:30:00,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-12-02 08:30:00,086 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 4.7) internal successors, (94), 21 states have internal predecessors, (94), 7 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (18), 5 states have call predecessors, (18), 7 states have call successors, (18) Word has length 90 [2024-12-02 08:30:00,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:30:00,088 INFO L225 Difference]: With dead ends: 1557 [2024-12-02 08:30:00,088 INFO L226 Difference]: Without dead ends: 894 [2024-12-02 08:30:00,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=371, Invalid=960, Unknown=1, NotChecked=0, Total=1332 [2024-12-02 08:30:00,090 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 403 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 25 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:30:00,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 893 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1344 Invalid, 19 Unknown, 0 Unchecked, 80.0s Time] [2024-12-02 08:30:00,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2024-12-02 08:30:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 701. [2024-12-02 08:30:00,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 616 states have (on average 1.2516233766233766) internal successors, (771), 616 states have internal predecessors, (771), 54 states have call successors, (54), 30 states have call predecessors, (54), 30 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 08:30:00,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 879 transitions. [2024-12-02 08:30:00,198 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 879 transitions. Word has length 90 [2024-12-02 08:30:00,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:30:00,198 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 879 transitions. [2024-12-02 08:30:00,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 4.7) internal successors, (94), 21 states have internal predecessors, (94), 7 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (18), 5 states have call predecessors, (18), 7 states have call successors, (18) [2024-12-02 08:30:00,198 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 879 transitions. [2024-12-02 08:30:00,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 08:30:00,199 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:30:00,199 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:30:00,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:30:00,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:30:00,400 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:30:00,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:30:00,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1971202213, now seen corresponding path program 1 times [2024-12-02 08:30:00,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:30:00,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327002002] [2024-12-02 08:30:00,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:30:00,401 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 [2024-12-02 08:30:00,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:30:00,403 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:30:00,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:30:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:30:00,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 08:30:00,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:30:00,689 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 20 treesize of output 21 [2024-12-02 08:30:05,659 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:30:05,659 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 145 treesize of output 75 [2024-12-02 08:30:06,261 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:30:06,261 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 160 treesize of output 78 [2024-12-02 08:30:06,773 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:30:06,774 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 155 treesize of output 88 [2024-12-02 08:30:07,329 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:30:07,329 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 140 treesize of output 97 [2024-12-02 08:30:07,799 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:30:07,800 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 142 treesize of output 108 [2024-12-02 08:30:08,146 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:30:08,147 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 153 treesize of output 132 [2024-12-02 08:30:12,641 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:30:12,642 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 179 treesize of output 138 [2024-12-02 08:30:12,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:30:12,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 204 treesize of output 90 [2024-12-02 08:30:16,961 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 08:30:16,961 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:30:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-12-02 08:30:17,535 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:30:17,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327002002] [2024-12-02 08:30:17,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327002002] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:30:17,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:30:17,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 22 [2024-12-02 08:30:17,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603848154] [2024-12-02 08:30:17,535 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:30:17,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 08:30:17,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:30:17,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 08:30:17,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=339, Unknown=3, NotChecked=0, Total=462 [2024-12-02 08:30:17,536 INFO L87 Difference]: Start difference. First operand 701 states and 879 transitions. Second operand has 22 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 5 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 08:30:26,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:30:30,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:30:34,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:30:37,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:30:41,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:30:45,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:30:49,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:30:53,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:30:58,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:31:02,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:31:06,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:31:10,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:31:14,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:31:18,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:31:22,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:31:26,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:31:30,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:31:34,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:31:38,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:31:41,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:31:41,065 INFO L93 Difference]: Finished difference Result 1592 states and 2000 transitions. [2024-12-02 08:31:41,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 08:31:41,066 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 5 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) Word has length 90 [2024-12-02 08:31:41,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:31:41,069 INFO L225 Difference]: With dead ends: 1592 [2024-12-02 08:31:41,069 INFO L226 Difference]: Without dead ends: 894 [2024-12-02 08:31:41,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=281, Invalid=708, Unknown=3, NotChecked=0, Total=992 [2024-12-02 08:31:41,070 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 556 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 56 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:31:41,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 847 Invalid, 1656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1581 Invalid, 19 Unknown, 0 Unchecked, 82.1s Time] [2024-12-02 08:31:41,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2024-12-02 08:31:41,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 706. [2024-12-02 08:31:41,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 621 states have (on average 1.2463768115942029) internal successors, (774), 621 states have internal predecessors, (774), 54 states have call successors, (54), 30 states have call predecessors, (54), 30 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 08:31:41,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 882 transitions. [2024-12-02 08:31:41,188 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 882 transitions. Word has length 90 [2024-12-02 08:31:41,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:31:41,188 INFO L471 AbstractCegarLoop]: Abstraction has 706 states and 882 transitions. [2024-12-02 08:31:41,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 5 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 08:31:41,188 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 882 transitions. [2024-12-02 08:31:41,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 08:31:41,189 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:31:41,189 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:31:41,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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)] Forceful destruction successful, exit code 0 [2024-12-02 08:31:41,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:31:41,390 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:31:41,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:31:41,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1384396199, now seen corresponding path program 1 times [2024-12-02 08:31:41,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:31:41,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201880864] [2024-12-02 08:31:41,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:31:41,390 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 [2024-12-02 08:31:41,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:31:41,392 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:31:41,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:31:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:31:41,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 08:31:41,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:31:41,750 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 [2024-12-02 08:31:42,124 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:31:42,124 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 125 treesize of output 67 [2024-12-02 08:31:42,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:31:42,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 80 [2024-12-02 08:31:42,768 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:31:42,768 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 150 treesize of output 83 [2024-12-02 08:31:43,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:31:43,014 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 150 treesize of output 83 [2024-12-02 08:31:43,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:31:43,306 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 152 treesize of output 94 [2024-12-02 08:31:43,535 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:31:43,535 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 163 treesize of output 118 [2024-12-02 08:31:47,993 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:31:47,993 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 238 treesize of output 163 [2024-12-02 08:31:48,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:31:48,615 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 334 treesize of output 120 [2024-12-02 08:31:48,966 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 56 proven. 24 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-12-02 08:31:48,966 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:31:49,781 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:31:49,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201880864] [2024-12-02 08:31:49,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201880864] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:31:49,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1851415509] [2024-12-02 08:31:49,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:31:49,782 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 08:31:49,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 08:31:49,783 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 08:31:49,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-12-02 08:31:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:31:51,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 08:31:51,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:31:51,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 8 [2024-12-02 08:32:01,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:32:01,396 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 110 treesize of output 57 [2024-12-02 08:32:01,756 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:32:01,756 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 107 treesize of output 65 [2024-12-02 08:32:02,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:32:02,567 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 115 treesize of output 76 [2024-12-02 08:32:03,155 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:32:03,155 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 105 treesize of output 93 [2024-12-02 08:32:03,824 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:32:03,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 118 treesize of output 112 [2024-12-02 08:32:04,258 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:32:04,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 36 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 136 treesize of output 115 [2024-12-02 08:32:05,065 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:32:05,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 36 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 175 treesize of output 152 [2024-12-02 08:32:06,245 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:32:06,245 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 286 treesize of output 146 [2024-12-02 08:32:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 104 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 08:32:11,084 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:32:12,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1851415509] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:32:12,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:32:12,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 38 [2024-12-02 08:32:12,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341335299] [2024-12-02 08:32:12,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:32:12,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-12-02 08:32:12,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:32:12,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-12-02 08:32:12,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=2102, Unknown=3, NotChecked=0, Total=2450 [2024-12-02 08:32:12,586 INFO L87 Difference]: Start difference. First operand 706 states and 882 transitions. Second operand has 39 states, 37 states have (on average 2.7837837837837838) internal successors, (103), 35 states have internal predecessors, (103), 8 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2024-12-02 08:32:24,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:32:36,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:32:40,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:32:44,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:32:49,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:32:53,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:32:57,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:33:01,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:33:05,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:33:09,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:33:14,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:33:18,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:33:22,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:33:26,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:33:30,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:33:34,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:33:39,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:33:43,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:33:48,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:34:00,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:34:00,430 INFO L93 Difference]: Finished difference Result 1621 states and 2031 transitions. [2024-12-02 08:34:00,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-12-02 08:34:00,431 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 37 states have (on average 2.7837837837837838) internal successors, (103), 35 states have internal predecessors, (103), 8 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) Word has length 90 [2024-12-02 08:34:00,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:34:00,434 INFO L225 Difference]: With dead ends: 1621 [2024-12-02 08:34:00,434 INFO L226 Difference]: Without dead ends: 918 [2024-12-02 08:34:00,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1756 ImplicationChecksByTransitivity, 41.6s TimeCoverageRelationStatistics Valid=1122, Invalid=5845, Unknown=5, NotChecked=0, Total=6972 [2024-12-02 08:34:00,437 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 733 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 2603 mSolverCounterSat, 54 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 2676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2603 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:34:00,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1567 Invalid, 2676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2603 Invalid, 19 Unknown, 0 Unchecked, 90.1s Time] [2024-12-02 08:34:00,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2024-12-02 08:34:00,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 693. [2024-12-02 08:34:00,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 608 states have (on average 1.2467105263157894) internal successors, (758), 608 states have internal predecessors, (758), 54 states have call successors, (54), 30 states have call predecessors, (54), 30 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 08:34:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 866 transitions. [2024-12-02 08:34:00,538 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 866 transitions. Word has length 90 [2024-12-02 08:34:00,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:34:00,538 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 866 transitions. [2024-12-02 08:34:00,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 37 states have (on average 2.7837837837837838) internal successors, (103), 35 states have internal predecessors, (103), 8 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2024-12-02 08:34:00,538 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 866 transitions. [2024-12-02 08:34:00,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 08:34:00,539 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:34:00,539 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:34:00,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:34:00,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2024-12-02 08:34:00,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 08:34:00,940 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:34:00,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:34:00,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1047894413, now seen corresponding path program 1 times [2024-12-02 08:34:00,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:34:00,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524091746] [2024-12-02 08:34:00,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:34:00,940 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 [2024-12-02 08:34:00,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:34:00,942 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:34:00,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:34:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:34:01,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 08:34:01,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:34:01,156 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 [2024-12-02 08:34:01,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-12-02 08:34:01,272 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:01,272 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 33 treesize of output 35 [2024-12-02 08:34:01,508 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:01,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 53 [2024-12-02 08:34:05,861 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-12-02 08:34:05,861 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:34:06,042 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:34:06,042 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:34:06,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524091746] [2024-12-02 08:34:06,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524091746] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:34:06,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:34:06,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2024-12-02 08:34:06,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96954832] [2024-12-02 08:34:06,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:34:06,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:34:06,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:34:06,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:34:06,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=118, Unknown=1, NotChecked=0, Total=156 [2024-12-02 08:34:06,044 INFO L87 Difference]: Start difference. First operand 693 states and 866 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:34:06,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:34:06,842 INFO L93 Difference]: Finished difference Result 1782 states and 2236 transitions. [2024-12-02 08:34:06,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:34:06,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 91 [2024-12-02 08:34:06,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:34:06,846 INFO L225 Difference]: With dead ends: 1782 [2024-12-02 08:34:06,846 INFO L226 Difference]: Without dead ends: 1092 [2024-12-02 08:34:06,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=42, Invalid=139, Unknown=1, NotChecked=0, Total=182 [2024-12-02 08:34:06,847 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 82 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:34:06,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 289 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 08:34:06,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2024-12-02 08:34:06,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 900. [2024-12-02 08:34:06,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 815 states have (on average 1.2588957055214725) internal successors, (1026), 815 states have internal predecessors, (1026), 54 states have call successors, (54), 30 states have call predecessors, (54), 30 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 08:34:06,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1134 transitions. [2024-12-02 08:34:06,976 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1134 transitions. Word has length 91 [2024-12-02 08:34:06,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:34:06,976 INFO L471 AbstractCegarLoop]: Abstraction has 900 states and 1134 transitions. [2024-12-02 08:34:06,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:34:06,976 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1134 transitions. [2024-12-02 08:34:06,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 08:34:06,977 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:34:06,977 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:34:06,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:34:07,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:34:07,178 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:34:07,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:34:07,178 INFO L85 PathProgramCache]: Analyzing trace with hash -346829835, now seen corresponding path program 1 times [2024-12-02 08:34:07,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:34:07,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290541844] [2024-12-02 08:34:07,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:34:07,179 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 [2024-12-02 08:34:07,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:34:07,180 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:34:07,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:34:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:34:07,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 08:34:07,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:34:07,397 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 [2024-12-02 08:34:07,479 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:07,479 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 33 treesize of output 35 [2024-12-02 08:34:07,695 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:07,696 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 53 treesize of output 47 [2024-12-02 08:34:12,020 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-12-02 08:34:12,020 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:34:12,020 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:34:12,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290541844] [2024-12-02 08:34:12,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290541844] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:34:12,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:34:12,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 08:34:12,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388093514] [2024-12-02 08:34:12,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:34:12,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 08:34:12,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:34:12,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 08:34:12,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=82, Unknown=1, NotChecked=0, Total=110 [2024-12-02 08:34:12,021 INFO L87 Difference]: Start difference. First operand 900 states and 1134 transitions. Second operand has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 08:34:16,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:34:18,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:34:18,637 INFO L93 Difference]: Finished difference Result 2104 states and 2624 transitions. [2024-12-02 08:34:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 08:34:18,638 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2024-12-02 08:34:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:34:18,640 INFO L225 Difference]: With dead ends: 2104 [2024-12-02 08:34:18,640 INFO L226 Difference]: Without dead ends: 1207 [2024-12-02 08:34:18,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=88, Invalid=331, Unknown=1, NotChecked=0, Total=420 [2024-12-02 08:34:18,642 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 245 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:34:18,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 453 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 703 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2024-12-02 08:34:18,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2024-12-02 08:34:18,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 966. [2024-12-02 08:34:18,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 881 states have (on average 1.246311010215664) internal successors, (1098), 881 states have internal predecessors, (1098), 54 states have call successors, (54), 30 states have call predecessors, (54), 30 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 08:34:18,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1206 transitions. [2024-12-02 08:34:18,771 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1206 transitions. Word has length 91 [2024-12-02 08:34:18,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:34:18,772 INFO L471 AbstractCegarLoop]: Abstraction has 966 states and 1206 transitions. [2024-12-02 08:34:18,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 08:34:18,772 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1206 transitions. [2024-12-02 08:34:18,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 08:34:18,773 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:34:18,773 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:34:18,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:34:18,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:34:18,974 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:34:18,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:34:18,974 INFO L85 PathProgramCache]: Analyzing trace with hash 262029771, now seen corresponding path program 1 times [2024-12-02 08:34:18,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:34:18,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685186513] [2024-12-02 08:34:18,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:34:18,975 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 [2024-12-02 08:34:18,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:34:18,976 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:34:18,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:34:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:34:19,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-12-02 08:34:19,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:34:19,250 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 [2024-12-02 08:34:19,715 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:19,715 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 125 treesize of output 67 [2024-12-02 08:34:20,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:20,048 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 140 treesize of output 70 [2024-12-02 08:34:20,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:20,257 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 140 treesize of output 70 [2024-12-02 08:34:20,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:20,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 80 [2024-12-02 08:34:20,977 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:20,977 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 152 treesize of output 94 [2024-12-02 08:34:21,253 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:21,253 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 225 treesize of output 138 [2024-12-02 08:34:22,390 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:22,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 425 treesize of output 143 [2024-12-02 08:34:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 56 proven. 24 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-12-02 08:34:22,582 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:34:23,140 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:34:23,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685186513] [2024-12-02 08:34:23,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685186513] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:34:23,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [288032745] [2024-12-02 08:34:23,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:34:23,140 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 08:34:23,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 08:34:23,142 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 08:34:23,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-12-02 08:34:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:34:24,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 08:34:24,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:34:24,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-12-02 08:34:34,611 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:34,611 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 118 treesize of output 61 [2024-12-02 08:34:35,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:35,130 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 115 treesize of output 69 [2024-12-02 08:34:35,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:35,761 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 108 treesize of output 78 [2024-12-02 08:34:36,375 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:36,375 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 105 treesize of output 86 [2024-12-02 08:34:37,132 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:37,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 50 treesize of output 61 [2024-12-02 08:34:37,578 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 107 treesize of output 101 [2024-12-02 08:34:43,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:43,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 264 treesize of output 112 [2024-12-02 08:34:43,881 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 88 proven. 24 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 08:34:43,881 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:34:44,484 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:34:44,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [288032745] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:34:44,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:34:44,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16, 19] total 36 [2024-12-02 08:34:44,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082957335] [2024-12-02 08:34:44,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:34:44,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:34:44,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:34:44,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:34:44,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1145, Unknown=1, NotChecked=0, Total=1332 [2024-12-02 08:34:44,485 INFO L87 Difference]: Start difference. First operand 966 states and 1206 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:34:45,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:34:45,682 INFO L93 Difference]: Finished difference Result 976 states and 1217 transitions. [2024-12-02 08:34:45,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:34:45,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 91 [2024-12-02 08:34:45,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:34:45,686 INFO L225 Difference]: With dead ends: 976 [2024-12-02 08:34:45,686 INFO L226 Difference]: Without dead ends: 974 [2024-12-02 08:34:45,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 261 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=204, Invalid=1355, Unknown=1, NotChecked=0, Total=1560 [2024-12-02 08:34:45,687 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 88 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:34:45,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 410 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 08:34:45,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2024-12-02 08:34:45,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 785. [2024-12-02 08:34:45,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 700 states have (on average 1.2514285714285713) internal successors, (876), 700 states have internal predecessors, (876), 54 states have call successors, (54), 30 states have call predecessors, (54), 30 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 08:34:45,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 984 transitions. [2024-12-02 08:34:45,788 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 984 transitions. Word has length 91 [2024-12-02 08:34:45,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:34:45,788 INFO L471 AbstractCegarLoop]: Abstraction has 785 states and 984 transitions. [2024-12-02 08:34:45,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:34:45,788 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 984 transitions. [2024-12-02 08:34:45,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 08:34:45,789 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:34:45,789 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:34:45,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-12-02 08:34:45,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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)] Ended with exit code 0 [2024-12-02 08:34:46,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:34:46,190 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:34:46,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:34:46,190 INFO L85 PathProgramCache]: Analyzing trace with hash -260466144, now seen corresponding path program 1 times [2024-12-02 08:34:46,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:34:46,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294849599] [2024-12-02 08:34:46,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:34:46,191 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 [2024-12-02 08:34:46,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:34:46,192 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:34:46,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:34:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:34:46,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 08:34:46,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:34:46,425 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 [2024-12-02 08:34:46,428 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 21 treesize of output 21 [2024-12-02 08:34:46,448 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:46,448 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 [2024-12-02 08:34:50,488 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:50,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 23 [2024-12-02 08:34:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:34:50,526 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:34:50,526 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:34:50,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294849599] [2024-12-02 08:34:50,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294849599] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:34:50,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:34:50,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:34:50,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463228939] [2024-12-02 08:34:50,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:34:50,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:34:50,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:34:50,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:34:50,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2024-12-02 08:34:50,527 INFO L87 Difference]: Start difference. First operand 785 states and 984 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:34:54,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:34:55,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:34:55,703 INFO L93 Difference]: Finished difference Result 1689 states and 2129 transitions. [2024-12-02 08:34:55,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:34:55,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 92 [2024-12-02 08:34:55,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:34:55,707 INFO L225 Difference]: With dead ends: 1689 [2024-12-02 08:34:55,707 INFO L226 Difference]: Without dead ends: 1120 [2024-12-02 08:34:55,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2024-12-02 08:34:55,708 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 204 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:34:55,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 380 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 192 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2024-12-02 08:34:55,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2024-12-02 08:34:55,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1076. [2024-12-02 08:34:55,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 963 states have (on average 1.2315680166147456) internal successors, (1186), 963 states have internal predecessors, (1186), 72 states have call successors, (72), 40 states have call predecessors, (72), 40 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-12-02 08:34:55,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1330 transitions. [2024-12-02 08:34:55,841 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1330 transitions. Word has length 92 [2024-12-02 08:34:55,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:34:55,841 INFO L471 AbstractCegarLoop]: Abstraction has 1076 states and 1330 transitions. [2024-12-02 08:34:55,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:34:55,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1330 transitions. [2024-12-02 08:34:55,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 08:34:55,842 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:34:55,842 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:34:55,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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 [2024-12-02 08:34:56,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:34:56,043 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:34:56,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:34:56,043 INFO L85 PathProgramCache]: Analyzing trace with hash -44420219, now seen corresponding path program 1 times [2024-12-02 08:34:56,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:34:56,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825548720] [2024-12-02 08:34:56,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:34:56,043 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 [2024-12-02 08:34:56,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:34:56,045 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:34:56,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2024-12-02 08:34:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:34:56,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 08:34:56,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:34:56,316 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 [2024-12-02 08:34:56,320 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 21 treesize of output 21 [2024-12-02 08:34:56,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:56,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 24 [2024-12-02 08:34:56,368 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:34:56,368 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 36 treesize of output 42 [2024-12-02 08:35:00,685 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:35:00,685 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:35:00,686 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:35:00,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825548720] [2024-12-02 08:35:00,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825548720] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:35:00,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:35:00,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:35:00,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158472294] [2024-12-02 08:35:00,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:35:00,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:35:00,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:35:00,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:35:00,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=41, Unknown=1, NotChecked=0, Total=56 [2024-12-02 08:35:00,687 INFO L87 Difference]: Start difference. First operand 1076 states and 1330 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:35:04,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:35:08,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:35:12,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:35:16,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:35:21,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:35:25,898 WARN L539 Checker$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 [0] [2024-12-02 08:35:26,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:35:26,528 INFO L93 Difference]: Finished difference Result 1940 states and 2422 transitions. [2024-12-02 08:35:26,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 08:35:26,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 94 [2024-12-02 08:35:26,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:35:26,533 INFO L225 Difference]: With dead ends: 1940 [2024-12-02 08:35:26,534 INFO L226 Difference]: Without dead ends: 1140 [2024-12-02 08:35:26,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=34, Invalid=97, Unknown=1, NotChecked=0, Total=132 [2024-12-02 08:35:26,535 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 104 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 8 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:35:26,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 884 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 524 Invalid, 6 Unknown, 0 Unchecked, 25.5s Time] [2024-12-02 08:35:26,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2024-12-02 08:35:26,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1077. [2024-12-02 08:35:26,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 964 states have (on average 1.2313278008298756) internal successors, (1187), 964 states have internal predecessors, (1187), 72 states have call successors, (72), 40 states have call predecessors, (72), 40 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-12-02 08:35:26,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1331 transitions. [2024-12-02 08:35:26,730 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1331 transitions. Word has length 94 [2024-12-02 08:35:26,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:35:26,730 INFO L471 AbstractCegarLoop]: Abstraction has 1077 states and 1331 transitions. [2024-12-02 08:35:26,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:35:26,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1331 transitions. [2024-12-02 08:35:26,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 08:35:26,731 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:35:26,731 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:35:26,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2024-12-02 08:35:26,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:35:26,932 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:35:26,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:35:26,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1409095014, now seen corresponding path program 1 times [2024-12-02 08:35:26,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:35:26,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462906079] [2024-12-02 08:35:26,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:35:26,933 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 [2024-12-02 08:35:26,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:35:26,934 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:35:26,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2024-12-02 08:35:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:35:27,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 08:35:27,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:35:27,135 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 21 treesize of output 9 [2024-12-02 08:35:27,159 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:35:27,159 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:35:27,159 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:35:27,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462906079] [2024-12-02 08:35:27,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462906079] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:35:27,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:35:27,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:35:27,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914646966] [2024-12-02 08:35:27,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:35:27,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:35:27,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:35:27,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:35:27,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:35:27,160 INFO L87 Difference]: Start difference. First operand 1077 states and 1331 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:35:27,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:35:27,325 INFO L93 Difference]: Finished difference Result 1962 states and 2440 transitions. [2024-12-02 08:35:27,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:35:27,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 97 [2024-12-02 08:35:27,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:35:27,329 INFO L225 Difference]: With dead ends: 1962 [2024-12-02 08:35:27,329 INFO L226 Difference]: Without dead ends: 1077 [2024-12-02 08:35:27,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:35:27,330 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:35:27,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:35:27,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2024-12-02 08:35:27,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1077. [2024-12-02 08:35:27,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 964 states have (on average 1.2188796680497926) internal successors, (1175), 964 states have internal predecessors, (1175), 72 states have call successors, (72), 40 states have call predecessors, (72), 40 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-12-02 08:35:27,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1319 transitions. [2024-12-02 08:35:27,457 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1319 transitions. Word has length 97 [2024-12-02 08:35:27,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:35:27,457 INFO L471 AbstractCegarLoop]: Abstraction has 1077 states and 1319 transitions. [2024-12-02 08:35:27,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:35:27,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1319 transitions. [2024-12-02 08:35:27,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 08:35:27,458 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:35:27,458 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:35:27,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2024-12-02 08:35:27,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:35:27,659 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:35:27,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:35:27,659 INFO L85 PathProgramCache]: Analyzing trace with hash -22891620, now seen corresponding path program 1 times [2024-12-02 08:35:27,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:35:27,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024486801] [2024-12-02 08:35:27,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:35:27,659 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 [2024-12-02 08:35:27,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:35:27,661 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:35:27,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2024-12-02 08:35:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:35:27,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 08:35:27,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:35:27,891 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 33 treesize of output 15 [2024-12-02 08:35:27,929 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:35:27,929 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:35:27,929 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:35:27,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024486801] [2024-12-02 08:35:27,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024486801] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:35:27,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:35:27,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:35:27,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005528546] [2024-12-02 08:35:27,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:35:27,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:35:27,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:35:27,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:35:27,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:35:27,931 INFO L87 Difference]: Start difference. First operand 1077 states and 1319 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:35:28,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:35:28,418 INFO L93 Difference]: Finished difference Result 1946 states and 2392 transitions. [2024-12-02 08:35:28,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:35:28,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 97 [2024-12-02 08:35:28,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:35:28,421 INFO L225 Difference]: With dead ends: 1946 [2024-12-02 08:35:28,422 INFO L226 Difference]: Without dead ends: 1077 [2024-12-02 08:35:28,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:35:28,423 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:35:28,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 302 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:35:28,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2024-12-02 08:35:28,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1077. [2024-12-02 08:35:28,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 964 states have (on average 1.2064315352697095) internal successors, (1163), 964 states have internal predecessors, (1163), 72 states have call successors, (72), 40 states have call predecessors, (72), 40 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-12-02 08:35:28,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1307 transitions. [2024-12-02 08:35:28,549 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1307 transitions. Word has length 97 [2024-12-02 08:35:28,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:35:28,550 INFO L471 AbstractCegarLoop]: Abstraction has 1077 states and 1307 transitions. [2024-12-02 08:35:28,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:35:28,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1307 transitions. [2024-12-02 08:35:28,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 08:35:28,550 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:35:28,550 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:35:28,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2024-12-02 08:35:28,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:35:28,751 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:35:28,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:35:28,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1900336414, now seen corresponding path program 1 times [2024-12-02 08:35:28,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:35:28,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113416173] [2024-12-02 08:35:28,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:35:28,752 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 [2024-12-02 08:35:28,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:35:28,753 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:35:28,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2024-12-02 08:35:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:35:29,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 08:35:29,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:35:29,009 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 [2024-12-02 08:35:29,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2024-12-02 08:35:29,212 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:35:29,212 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 36 treesize of output 38 [2024-12-02 08:35:29,415 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:35:29,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 41 [2024-12-02 08:35:29,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:35:29,614 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 53 treesize of output 52 [2024-12-02 08:35:30,181 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:35:30,182 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 82 treesize of output 72 [2024-12-02 08:35:30,329 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:35:30,329 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 103 treesize of output 85 [2024-12-02 08:35:34,514 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:35:34,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 129 treesize of output 51 [2024-12-02 08:35:34,623 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 92 proven. 18 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 08:35:34,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:35:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:35:35,020 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:35:35,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113416173] [2024-12-02 08:35:35,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113416173] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:35:35,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:35:35,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 20 [2024-12-02 08:35:35,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617325989] [2024-12-02 08:35:35,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:35:35,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:35:35,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:35:35,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:35:35,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=302, Unknown=1, NotChecked=0, Total=380 [2024-12-02 08:35:35,021 INFO L87 Difference]: Start difference. First operand 1077 states and 1307 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:35:37,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:35:37,191 INFO L93 Difference]: Finished difference Result 2239 states and 2737 transitions. [2024-12-02 08:35:37,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:35:37,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 97 [2024-12-02 08:35:37,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:35:37,196 INFO L225 Difference]: With dead ends: 2239 [2024-12-02 08:35:37,196 INFO L226 Difference]: Without dead ends: 1424 [2024-12-02 08:35:37,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=89, Invalid=416, Unknown=1, NotChecked=0, Total=506 [2024-12-02 08:35:37,197 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 109 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 08:35:37,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 563 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 08:35:37,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2024-12-02 08:35:37,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1380. [2024-12-02 08:35:37,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1239 states have (on average 1.1985472154963681) internal successors, (1485), 1239 states have internal predecessors, (1485), 90 states have call successors, (90), 50 states have call predecessors, (90), 50 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2024-12-02 08:35:37,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 1665 transitions. [2024-12-02 08:35:37,370 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 1665 transitions. Word has length 97 [2024-12-02 08:35:37,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:35:37,370 INFO L471 AbstractCegarLoop]: Abstraction has 1380 states and 1665 transitions. [2024-12-02 08:35:37,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:35:37,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 1665 transitions. [2024-12-02 08:35:37,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 08:35:37,371 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:35:37,371 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:35:37,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2024-12-02 08:35:37,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:35:37,572 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:35:37,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:35:37,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1925967461, now seen corresponding path program 1 times [2024-12-02 08:35:37,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:35:37,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120852676] [2024-12-02 08:35:37,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:35:37,575 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 [2024-12-02 08:35:37,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:35:37,580 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:35:37,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2024-12-02 08:35:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:35:37,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 08:35:37,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:35:37,829 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 32 treesize of output 14 [2024-12-02 08:35:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:35:37,851 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:35:37,851 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:35:37,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120852676] [2024-12-02 08:35:37,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120852676] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:35:37,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:35:37,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:35:37,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274461908] [2024-12-02 08:35:37,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:35:37,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:35:37,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:35:37,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:35:37,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:35:37,852 INFO L87 Difference]: Start difference. First operand 1380 states and 1665 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:35:38,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:35:38,233 INFO L93 Difference]: Finished difference Result 2502 states and 3034 transitions. [2024-12-02 08:35:38,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:35:38,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 97 [2024-12-02 08:35:38,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:35:38,237 INFO L225 Difference]: With dead ends: 2502 [2024-12-02 08:35:38,237 INFO L226 Difference]: Without dead ends: 1380 [2024-12-02 08:35:38,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:35:38,238 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:35:38,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 300 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:35:38,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2024-12-02 08:35:38,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1380. [2024-12-02 08:35:38,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1239 states have (on average 1.188861985472155) internal successors, (1473), 1239 states have internal predecessors, (1473), 90 states have call successors, (90), 50 states have call predecessors, (90), 50 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2024-12-02 08:35:38,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 1653 transitions. [2024-12-02 08:35:38,402 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 1653 transitions. Word has length 97 [2024-12-02 08:35:38,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:35:38,402 INFO L471 AbstractCegarLoop]: Abstraction has 1380 states and 1653 transitions. [2024-12-02 08:35:38,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:35:38,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 1653 transitions. [2024-12-02 08:35:38,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 08:35:38,403 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:35:38,403 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:35:38,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2024-12-02 08:35:38,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:35:38,604 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:35:38,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:35:38,604 INFO L85 PathProgramCache]: Analyzing trace with hash -445771801, now seen corresponding path program 1 times [2024-12-02 08:35:38,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:35:38,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407133898] [2024-12-02 08:35:38,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:35:38,604 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 [2024-12-02 08:35:38,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:35:38,606 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:35:38,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2024-12-02 08:35:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:35:38,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 08:35:38,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:35:38,873 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 [2024-12-02 08:35:39,065 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:35:39,065 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 39 [2024-12-02 08:35:39,398 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:35:39,398 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 41 [2024-12-02 08:35:39,421 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:35:39,421 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 58 treesize of output 61 [2024-12-02 08:35:43,815 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:35:43,816 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 58 treesize of output 22 [2024-12-02 08:35:43,849 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-12-02 08:35:43,849 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:35:43,849 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:35:43,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407133898] [2024-12-02 08:35:43,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407133898] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:35:43,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:35:43,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 08:35:43,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55060302] [2024-12-02 08:35:43,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:35:43,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 08:35:43,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:35:43,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 08:35:43,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=94, Unknown=1, NotChecked=0, Total=132 [2024-12-02 08:35:43,850 INFO L87 Difference]: Start difference. First operand 1380 states and 1653 transitions. Second operand has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 08:35:48,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:35:53,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:35:57,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:36:01,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:36:04,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:36:08,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:36:12,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:36:16,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:36:21,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:36:23,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:36:23,038 INFO L93 Difference]: Finished difference Result 2797 states and 3373 transitions. [2024-12-02 08:36:23,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 08:36:23,039 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 97 [2024-12-02 08:36:23,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:36:23,042 INFO L225 Difference]: With dead ends: 2797 [2024-12-02 08:36:23,042 INFO L226 Difference]: Without dead ends: 1743 [2024-12-02 08:36:23,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=108, Invalid=353, Unknown=1, NotChecked=0, Total=462 [2024-12-02 08:36:23,043 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 431 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 54 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:36:23,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 568 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 813 Invalid, 9 Unknown, 0 Unchecked, 38.5s Time] [2024-12-02 08:36:23,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2024-12-02 08:36:23,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1437. [2024-12-02 08:36:23,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1296 states have (on average 1.1990740740740742) internal successors, (1554), 1296 states have internal predecessors, (1554), 90 states have call successors, (90), 50 states have call predecessors, (90), 50 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2024-12-02 08:36:23,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 1734 transitions. [2024-12-02 08:36:23,279 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 1734 transitions. Word has length 97 [2024-12-02 08:36:23,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:36:23,280 INFO L471 AbstractCegarLoop]: Abstraction has 1437 states and 1734 transitions. [2024-12-02 08:36:23,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 08:36:23,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 1734 transitions. [2024-12-02 08:36:23,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 08:36:23,280 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:36:23,281 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:36:23,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2024-12-02 08:36:23,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:36:23,481 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:36:23,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:36:23,481 INFO L85 PathProgramCache]: Analyzing trace with hash 775420443, now seen corresponding path program 1 times [2024-12-02 08:36:23,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:36:23,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828052451] [2024-12-02 08:36:23,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:36:23,482 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 [2024-12-02 08:36:23,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:36:23,483 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:36:23,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2024-12-02 08:36:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:36:23,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 08:36:23,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:36:23,722 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 21 treesize of output 9 [2024-12-02 08:36:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:36:23,744 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:36:23,744 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:36:23,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828052451] [2024-12-02 08:36:23,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828052451] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:36:23,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:36:23,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:36:23,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380532397] [2024-12-02 08:36:23,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:36:23,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:36:23,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:36:23,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:36:23,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:36:23,745 INFO L87 Difference]: Start difference. First operand 1437 states and 1734 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:36:23,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:36:23,928 INFO L93 Difference]: Finished difference Result 2548 states and 3100 transitions. [2024-12-02 08:36:23,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:36:23,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 99 [2024-12-02 08:36:23,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:36:23,932 INFO L225 Difference]: With dead ends: 2548 [2024-12-02 08:36:23,932 INFO L226 Difference]: Without dead ends: 1437 [2024-12-02 08:36:23,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:36:23,934 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:36:23,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:36:23,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2024-12-02 08:36:24,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1437. [2024-12-02 08:36:24,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1296 states have (on average 1.1959876543209877) internal successors, (1550), 1296 states have internal predecessors, (1550), 90 states have call successors, (90), 50 states have call predecessors, (90), 50 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2024-12-02 08:36:24,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 1730 transitions. [2024-12-02 08:36:24,217 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 1730 transitions. Word has length 99 [2024-12-02 08:36:24,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:36:24,218 INFO L471 AbstractCegarLoop]: Abstraction has 1437 states and 1730 transitions. [2024-12-02 08:36:24,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:36:24,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 1730 transitions. [2024-12-02 08:36:24,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 08:36:24,219 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:36:24,219 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:36:24,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2024-12-02 08:36:24,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:36:24,419 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:36:24,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:36:24,420 INFO L85 PathProgramCache]: Analyzing trace with hash 188614429, now seen corresponding path program 1 times [2024-12-02 08:36:24,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:36:24,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633521228] [2024-12-02 08:36:24,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:36:24,420 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 [2024-12-02 08:36:24,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:36:24,422 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:36:24,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2024-12-02 08:36:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:36:24,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 08:36:24,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:36:24,661 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 33 treesize of output 15 [2024-12-02 08:36:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:36:24,687 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:36:24,687 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:36:24,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633521228] [2024-12-02 08:36:24,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633521228] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:36:24,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:36:24,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:36:24,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702308673] [2024-12-02 08:36:24,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:36:24,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:36:24,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:36:24,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:36:24,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:36:24,687 INFO L87 Difference]: Start difference. First operand 1437 states and 1730 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:36:25,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:36:25,147 INFO L93 Difference]: Finished difference Result 2548 states and 3092 transitions. [2024-12-02 08:36:25,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:36:25,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 99 [2024-12-02 08:36:25,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:36:25,151 INFO L225 Difference]: With dead ends: 2548 [2024-12-02 08:36:25,151 INFO L226 Difference]: Without dead ends: 1437 [2024-12-02 08:36:25,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:36:25,152 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:36:25,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 295 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:36:25,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2024-12-02 08:36:25,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1437. [2024-12-02 08:36:25,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1296 states have (on average 1.1929012345679013) internal successors, (1546), 1296 states have internal predecessors, (1546), 90 states have call successors, (90), 50 states have call predecessors, (90), 50 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2024-12-02 08:36:25,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 1726 transitions. [2024-12-02 08:36:25,325 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 1726 transitions. Word has length 99 [2024-12-02 08:36:25,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:36:25,325 INFO L471 AbstractCegarLoop]: Abstraction has 1437 states and 1726 transitions. [2024-12-02 08:36:25,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:36:25,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 1726 transitions. [2024-12-02 08:36:25,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 08:36:25,326 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:36:25,326 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:36:25,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2024-12-02 08:36:25,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:36:25,526 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:36:25,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:36:25,526 INFO L85 PathProgramCache]: Analyzing trace with hash 889679007, now seen corresponding path program 1 times [2024-12-02 08:36:25,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:36:25,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127004327] [2024-12-02 08:36:25,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:36:25,527 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 [2024-12-02 08:36:25,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:36:25,528 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:36:25,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2024-12-02 08:36:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:36:25,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 08:36:25,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:36:25,834 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 [2024-12-02 08:36:25,888 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:36:25,888 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 33 treesize of output 35 [2024-12-02 08:36:25,989 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:36:25,990 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 59 treesize of output 43 [2024-12-02 08:36:26,039 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:36:26,039 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 60 treesize of output 63 [2024-12-02 08:36:30,221 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:36:30,221 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 78 treesize of output 87 [2024-12-02 08:36:38,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:36:38,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 88 treesize of output 36 [2024-12-02 08:36:38,826 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-12-02 08:36:38,826 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:36:38,827 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:36:38,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127004327] [2024-12-02 08:36:38,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127004327] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:36:38,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:36:38,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 08:36:38,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983315801] [2024-12-02 08:36:38,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:36:38,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 08:36:38,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:36:38,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 08:36:38,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=96, Unknown=3, NotChecked=0, Total=132 [2024-12-02 08:36:38,828 INFO L87 Difference]: Start difference. First operand 1437 states and 1726 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 08:36:43,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:36:47,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:36:51,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:36:55,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:37:00,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:37:04,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:37:09,004 WARN L539 Checker$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 [0] [2024-12-02 08:37:09,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:09,706 INFO L93 Difference]: Finished difference Result 2798 states and 3364 transitions. [2024-12-02 08:37:09,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 08:37:09,707 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 99 [2024-12-02 08:37:09,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:09,710 INFO L225 Difference]: With dead ends: 2798 [2024-12-02 08:37:09,710 INFO L226 Difference]: Without dead ends: 1687 [2024-12-02 08:37:09,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=97, Invalid=362, Unknown=3, NotChecked=0, Total=462 [2024-12-02 08:37:09,711 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 267 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 27 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:37:09,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 537 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 688 Invalid, 7 Unknown, 0 Unchecked, 30.2s Time] [2024-12-02 08:37:09,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2024-12-02 08:37:09,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1456. [2024-12-02 08:37:09,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1315 states have (on average 1.1961977186311787) internal successors, (1573), 1315 states have internal predecessors, (1573), 90 states have call successors, (90), 50 states have call predecessors, (90), 50 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2024-12-02 08:37:09,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 1753 transitions. [2024-12-02 08:37:09,878 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 1753 transitions. Word has length 99 [2024-12-02 08:37:09,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:09,879 INFO L471 AbstractCegarLoop]: Abstraction has 1456 states and 1753 transitions. [2024-12-02 08:37:09,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 08:37:09,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1753 transitions. [2024-12-02 08:37:09,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 08:37:09,879 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:09,879 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:37:09,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2024-12-02 08:37:10,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:37:10,080 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:10,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:10,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1916271997, now seen corresponding path program 1 times [2024-12-02 08:37:10,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:37:10,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063320790] [2024-12-02 08:37:10,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:10,081 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 [2024-12-02 08:37:10,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:37:10,082 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:37:10,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2024-12-02 08:37:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:10,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 08:37:10,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:37:10,347 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 [2024-12-02 08:37:10,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-12-02 08:37:10,388 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 25 [2024-12-02 08:37:14,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:37:14,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 15 [2024-12-02 08:37:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:37:14,230 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:37:14,230 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:37:14,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063320790] [2024-12-02 08:37:14,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063320790] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:14,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:14,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:37:14,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946356175] [2024-12-02 08:37:14,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:14,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:37:14,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:37:14,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:37:14,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2024-12-02 08:37:14,231 INFO L87 Difference]: Start difference. First operand 1456 states and 1753 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:37:18,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:37:22,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:37:26,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:37:30,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:37:31,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:31,387 INFO L93 Difference]: Finished difference Result 3108 states and 3775 transitions. [2024-12-02 08:37:31,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:37:31,388 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 102 [2024-12-02 08:37:31,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:31,392 INFO L225 Difference]: With dead ends: 3108 [2024-12-02 08:37:31,392 INFO L226 Difference]: Without dead ends: 1978 [2024-12-02 08:37:31,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=20, Invalid=35, Unknown=1, NotChecked=0, Total=56 [2024-12-02 08:37:31,394 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 151 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 34 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2024-12-02 08:37:31,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 492 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 301 Invalid, 4 Unknown, 0 Unchecked, 16.8s Time] [2024-12-02 08:37:31,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2024-12-02 08:37:31,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1956. [2024-12-02 08:37:31,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1956 states, 1731 states have (on average 1.196995956094743) internal successors, (2072), 1731 states have internal predecessors, (2072), 144 states have call successors, (144), 80 states have call predecessors, (144), 80 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 08:37:31,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 2360 transitions. [2024-12-02 08:37:31,693 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 2360 transitions. Word has length 102 [2024-12-02 08:37:31,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:31,693 INFO L471 AbstractCegarLoop]: Abstraction has 1956 states and 2360 transitions. [2024-12-02 08:37:31,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:37:31,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 2360 transitions. [2024-12-02 08:37:31,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 08:37:31,694 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:31,694 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:37:31,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2024-12-02 08:37:31,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:37:31,894 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:31,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:31,895 INFO L85 PathProgramCache]: Analyzing trace with hash 814777540, now seen corresponding path program 1 times [2024-12-02 08:37:31,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:37:31,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194855702] [2024-12-02 08:37:31,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:31,895 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 [2024-12-02 08:37:31,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:37:31,896 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:37:31,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2024-12-02 08:37:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:32,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 08:37:32,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:37:32,130 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 32 treesize of output 14 [2024-12-02 08:37:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:37:32,155 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:37:32,155 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:37:32,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194855702] [2024-12-02 08:37:32,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194855702] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:32,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:32,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:37:32,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102926569] [2024-12-02 08:37:32,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:32,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:37:32,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:37:32,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:37:32,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:37:32,156 INFO L87 Difference]: Start difference. First operand 1956 states and 2360 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:37:32,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:32,693 INFO L93 Difference]: Finished difference Result 3586 states and 4352 transitions. [2024-12-02 08:37:32,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:37:32,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 102 [2024-12-02 08:37:32,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:32,701 INFO L225 Difference]: With dead ends: 3586 [2024-12-02 08:37:32,702 INFO L226 Difference]: Without dead ends: 1956 [2024-12-02 08:37:32,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:37:32,704 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:37:32,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 293 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:37:32,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2024-12-02 08:37:33,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1956. [2024-12-02 08:37:33,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1956 states, 1731 states have (on average 1.192952050837666) internal successors, (2065), 1731 states have internal predecessors, (2065), 144 states have call successors, (144), 80 states have call predecessors, (144), 80 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 08:37:33,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 2353 transitions. [2024-12-02 08:37:33,048 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 2353 transitions. Word has length 102 [2024-12-02 08:37:33,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:33,048 INFO L471 AbstractCegarLoop]: Abstraction has 1956 states and 2353 transitions. [2024-12-02 08:37:33,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:37:33,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 2353 transitions. [2024-12-02 08:37:33,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 08:37:33,049 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:33,049 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:37:33,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2024-12-02 08:37:33,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:37:33,250 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:33,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:33,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1515842118, now seen corresponding path program 1 times [2024-12-02 08:37:33,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:37:33,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930111863] [2024-12-02 08:37:33,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:33,250 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 [2024-12-02 08:37:33,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:37:33,252 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:37:33,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2024-12-02 08:37:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:33,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 08:37:33,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:37:33,527 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 [2024-12-02 08:37:33,556 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 22 treesize of output 22 [2024-12-02 08:37:33,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:37:33,585 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 39 treesize of output 45 [2024-12-02 08:37:38,028 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:37:38,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 23 [2024-12-02 08:37:38,284 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:37:38,284 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:37:38,284 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:37:38,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930111863] [2024-12-02 08:37:38,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930111863] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:38,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:38,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 08:37:38,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426401686] [2024-12-02 08:37:38,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:38,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 08:37:38,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:37:38,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 08:37:38,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=129, Unknown=1, NotChecked=0, Total=156 [2024-12-02 08:37:38,286 INFO L87 Difference]: Start difference. First operand 1956 states and 2353 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:37:42,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:37:46,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:46,131 INFO L93 Difference]: Finished difference Result 3636 states and 4395 transitions. [2024-12-02 08:37:46,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 08:37:46,132 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 102 [2024-12-02 08:37:46,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:46,137 INFO L225 Difference]: With dead ends: 3636 [2024-12-02 08:37:46,137 INFO L226 Difference]: Without dead ends: 2006 [2024-12-02 08:37:46,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=68, Invalid=351, Unknown=1, NotChecked=0, Total=420 [2024-12-02 08:37:46,139 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 89 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:37:46,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 1446 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 942 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2024-12-02 08:37:46,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2024-12-02 08:37:46,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1958. [2024-12-02 08:37:46,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1958 states, 1733 states have (on average 1.192729371032891) internal successors, (2067), 1733 states have internal predecessors, (2067), 144 states have call successors, (144), 80 states have call predecessors, (144), 80 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 08:37:46,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2355 transitions. [2024-12-02 08:37:46,416 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2355 transitions. Word has length 102 [2024-12-02 08:37:46,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:46,416 INFO L471 AbstractCegarLoop]: Abstraction has 1958 states and 2355 transitions. [2024-12-02 08:37:46,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:37:46,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2355 transitions. [2024-12-02 08:37:46,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 08:37:46,417 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:46,417 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:37:46,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2024-12-02 08:37:46,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:37:46,617 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:46,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:46,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1601271777, now seen corresponding path program 1 times [2024-12-02 08:37:46,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:37:46,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454090143] [2024-12-02 08:37:46,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:46,618 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 [2024-12-02 08:37:46,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:37:46,619 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:37:46,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2024-12-02 08:37:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:47,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 08:37:47,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:37:47,075 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 [2024-12-02 08:37:47,105 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 21 treesize of output 21 [2024-12-02 08:37:47,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:37:47,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 24 [2024-12-02 08:37:47,153 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:37:47,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 42 [2024-12-02 08:37:51,461 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:37:51,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 22 [2024-12-02 08:37:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:37:51,688 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:37:51,688 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:37:51,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454090143] [2024-12-02 08:37:51,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454090143] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:51,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:51,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 08:37:51,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834230798] [2024-12-02 08:37:51,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:51,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 08:37:51,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:37:51,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 08:37:51,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=129, Unknown=1, NotChecked=0, Total=156 [2024-12-02 08:37:51,689 INFO L87 Difference]: Start difference. First operand 1958 states and 2355 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:37:55,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:37:59,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:38:04,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:38:08,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:38:12,134 WARN L539 Checker$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 [0] [2024-12-02 08:38:16,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:38:21,723 WARN L539 Checker$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 [0] [2024-12-02 08:38:23,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:38:23,159 INFO L93 Difference]: Finished difference Result 3724 states and 4497 transitions. [2024-12-02 08:38:23,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 08:38:23,160 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 104 [2024-12-02 08:38:23,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:38:23,164 INFO L225 Difference]: With dead ends: 3724 [2024-12-02 08:38:23,164 INFO L226 Difference]: Without dead ends: 2092 [2024-12-02 08:38:23,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=68, Invalid=351, Unknown=1, NotChecked=0, Total=420 [2024-12-02 08:38:23,166 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 174 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 34 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.7s IncrementalHoareTripleChecker+Time [2024-12-02 08:38:23,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 1293 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 962 Invalid, 7 Unknown, 0 Unchecked, 30.7s Time] [2024-12-02 08:38:23,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2024-12-02 08:38:23,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 1766. [2024-12-02 08:38:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1569 states have (on average 1.191204588910134) internal successors, (1869), 1569 states have internal predecessors, (1869), 126 states have call successors, (126), 70 states have call predecessors, (126), 70 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2024-12-02 08:38:23,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2121 transitions. [2024-12-02 08:38:23,412 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2121 transitions. Word has length 104 [2024-12-02 08:38:23,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:38:23,412 INFO L471 AbstractCegarLoop]: Abstraction has 1766 states and 2121 transitions. [2024-12-02 08:38:23,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:38:23,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2121 transitions. [2024-12-02 08:38:23,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 08:38:23,413 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:38:23,413 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:38:23,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2024-12-02 08:38:23,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:38:23,614 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:38:23,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:38:23,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1200841898, now seen corresponding path program 1 times [2024-12-02 08:38:23,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:38:23,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780062787] [2024-12-02 08:38:23,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:38:23,614 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 [2024-12-02 08:38:23,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:38:23,616 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:38:23,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2024-12-02 08:38:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:38:23,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 08:38:23,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:38:23,934 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 [2024-12-02 08:38:23,967 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 32 treesize of output 16 [2024-12-02 08:38:23,975 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 16 [2024-12-02 08:38:23,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 34 [2024-12-02 08:38:28,235 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:38:28,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 20 [2024-12-02 08:38:28,267 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 08:38:28,267 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:38:28,267 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:38:28,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780062787] [2024-12-02 08:38:28,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780062787] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:38:28,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:38:28,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:38:28,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824161265] [2024-12-02 08:38:28,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:38:28,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:38:28,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:38:28,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:38:28,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2024-12-02 08:38:28,269 INFO L87 Difference]: Start difference. First operand 1766 states and 2121 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:38:32,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:38:36,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:38:40,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:38:44,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:38:48,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:38:52,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:38:56,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:39:00,813 WARN L539 Checker$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 [0] [2024-12-02 08:39:05,265 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 [0] [2024-12-02 08:39:05,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:39:05,852 INFO L93 Difference]: Finished difference Result 3535 states and 4265 transitions. [2024-12-02 08:39:05,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:39:05,853 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 104 [2024-12-02 08:39:05,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:39:05,857 INFO L225 Difference]: With dead ends: 3535 [2024-12-02 08:39:05,857 INFO L226 Difference]: Without dead ends: 2095 [2024-12-02 08:39:05,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=20, Invalid=35, Unknown=1, NotChecked=0, Total=56 [2024-12-02 08:39:05,858 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 89 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 10 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:39:05,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 453 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 350 Invalid, 9 Unknown, 0 Unchecked, 37.2s Time] [2024-12-02 08:39:05,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2024-12-02 08:39:06,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 1968. [2024-12-02 08:39:06,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1743 states have (on average 1.1927710843373494) internal successors, (2079), 1743 states have internal predecessors, (2079), 144 states have call successors, (144), 80 states have call predecessors, (144), 80 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 08:39:06,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 2367 transitions. [2024-12-02 08:39:06,146 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 2367 transitions. Word has length 104 [2024-12-02 08:39:06,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:39:06,146 INFO L471 AbstractCegarLoop]: Abstraction has 1968 states and 2367 transitions. [2024-12-02 08:39:06,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:39:06,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 2367 transitions. [2024-12-02 08:39:06,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-02 08:39:06,148 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:39:06,148 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:39:06,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2024-12-02 08:39:06,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:39:06,348 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:39:06,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:39:06,349 INFO L85 PathProgramCache]: Analyzing trace with hash -95949985, now seen corresponding path program 1 times [2024-12-02 08:39:06,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:39:06,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656740019] [2024-12-02 08:39:06,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:39:06,349 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 [2024-12-02 08:39:06,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:39:06,351 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:39:06,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2024-12-02 08:39:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:39:06,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 08:39:06,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:39:06,709 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2024-12-02 08:39:06,709 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:39:06,710 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:39:06,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656740019] [2024-12-02 08:39:06,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656740019] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:39:06,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:39:06,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:39:06,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838817139] [2024-12-02 08:39:06,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:39:06,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:39:06,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:39:06,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:39:06,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:39:06,711 INFO L87 Difference]: Start difference. First operand 1968 states and 2367 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:39:07,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:39:07,039 INFO L93 Difference]: Finished difference Result 4038 states and 4873 transitions. [2024-12-02 08:39:07,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:39:07,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 177 [2024-12-02 08:39:07,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:39:07,044 INFO L225 Difference]: With dead ends: 4038 [2024-12-02 08:39:07,045 INFO L226 Difference]: Without dead ends: 2396 [2024-12-02 08:39:07,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:39:07,046 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 60 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:39:07,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 223 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:39:07,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2024-12-02 08:39:07,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 1955. [2024-12-02 08:39:07,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1955 states, 1730 states have (on average 1.1878612716763006) internal successors, (2055), 1730 states have internal predecessors, (2055), 144 states have call successors, (144), 80 states have call predecessors, (144), 80 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 08:39:07,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 2343 transitions. [2024-12-02 08:39:07,380 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 2343 transitions. Word has length 177 [2024-12-02 08:39:07,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:39:07,380 INFO L471 AbstractCegarLoop]: Abstraction has 1955 states and 2343 transitions. [2024-12-02 08:39:07,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:39:07,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 2343 transitions. [2024-12-02 08:39:07,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-12-02 08:39:07,383 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:39:07,383 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:39:07,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2024-12-02 08:39:07,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:39:07,584 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:39:07,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:39:07,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1499300805, now seen corresponding path program 1 times [2024-12-02 08:39:07,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:39:07,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494747527] [2024-12-02 08:39:07,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:39:07,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:39:07,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:39:07,587 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:39:07,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2024-12-02 08:39:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:39:07,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 08:39:07,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:39:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2024-12-02 08:39:07,890 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:39:07,890 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:39:07,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494747527] [2024-12-02 08:39:07,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494747527] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:39:07,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:39:07,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:39:07,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097013045] [2024-12-02 08:39:07,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:39:07,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:39:07,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:39:07,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:39:07,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:39:07,891 INFO L87 Difference]: Start difference. First operand 1955 states and 2343 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:39:08,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:39:08,302 INFO L93 Difference]: Finished difference Result 3566 states and 4257 transitions. [2024-12-02 08:39:08,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:39:08,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 178 [2024-12-02 08:39:08,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:39:08,306 INFO L225 Difference]: With dead ends: 3566 [2024-12-02 08:39:08,306 INFO L226 Difference]: Without dead ends: 1747 [2024-12-02 08:39:08,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:39:08,308 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 66 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:39:08,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 265 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:39:08,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2024-12-02 08:39:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1680. [2024-12-02 08:39:08,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1455 states have (on average 1.1512027491408934) internal successors, (1675), 1455 states have internal predecessors, (1675), 144 states have call successors, (144), 80 states have call predecessors, (144), 80 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 08:39:08,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 1963 transitions. [2024-12-02 08:39:08,589 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 1963 transitions. Word has length 178 [2024-12-02 08:39:08,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:39:08,589 INFO L471 AbstractCegarLoop]: Abstraction has 1680 states and 1963 transitions. [2024-12-02 08:39:08,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 08:39:08,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 1963 transitions. [2024-12-02 08:39:08,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-12-02 08:39:08,591 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:39:08,591 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:39:08,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2024-12-02 08:39:08,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:39:08,792 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:39:08,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:39:08,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1037981589, now seen corresponding path program 1 times [2024-12-02 08:39:08,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:39:08,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654221455] [2024-12-02 08:39:08,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:39:08,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:39:08,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:39:08,794 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:39:08,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2024-12-02 08:39:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:39:09,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 08:39:09,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:39:09,346 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 [2024-12-02 08:39:09,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-12-02 08:39:09,466 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:39:09,466 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 33 treesize of output 35 [2024-12-02 08:39:09,638 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:39:09,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 37 [2024-12-02 08:39:09,656 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:39:09,656 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 53 treesize of output 47 [2024-12-02 08:39:13,782 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:39:13,782 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 64 treesize of output 50 [2024-12-02 08:39:13,957 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 433 proven. 6 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2024-12-02 08:39:13,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:39:14,176 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2024-12-02 08:39:14,176 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:39:14,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654221455] [2024-12-02 08:39:14,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654221455] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:39:14,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:39:14,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2024-12-02 08:39:14,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825901948] [2024-12-02 08:39:14,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:39:14,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:39:14,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:39:14,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:39:14,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=117, Unknown=1, NotChecked=0, Total=156 [2024-12-02 08:39:14,178 INFO L87 Difference]: Start difference. First operand 1680 states and 1963 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 08:39:15,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:39:15,136 INFO L93 Difference]: Finished difference Result 3617 states and 4209 transitions. [2024-12-02 08:39:15,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:39:15,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 178 [2024-12-02 08:39:15,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:39:15,141 INFO L225 Difference]: With dead ends: 3617 [2024-12-02 08:39:15,141 INFO L226 Difference]: Without dead ends: 2073 [2024-12-02 08:39:15,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=44, Invalid=137, Unknown=1, NotChecked=0, Total=182 [2024-12-02 08:39:15,142 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 123 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:39:15,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 313 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 08:39:15,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2024-12-02 08:39:15,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 1680. [2024-12-02 08:39:15,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1455 states have (on average 1.1450171821305841) internal successors, (1666), 1455 states have internal predecessors, (1666), 144 states have call successors, (144), 80 states have call predecessors, (144), 80 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 08:39:15,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 1954 transitions. [2024-12-02 08:39:15,426 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 1954 transitions. Word has length 178 [2024-12-02 08:39:15,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:39:15,426 INFO L471 AbstractCegarLoop]: Abstraction has 1680 states and 1954 transitions. [2024-12-02 08:39:15,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 08:39:15,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 1954 transitions. [2024-12-02 08:39:15,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-12-02 08:39:15,428 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:39:15,428 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:39:15,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2024-12-02 08:39:15,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 08:39:15,628 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:39:15,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:39:15,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1529840745, now seen corresponding path program 1 times [2024-12-02 08:39:15,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:39:15,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873447018] [2024-12-02 08:39:15,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:39:15,629 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 [2024-12-02 08:39:15,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 08:39:15,630 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -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) [2024-12-02 08:39:15,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58055362-9f92-4087-af5e-68a19f46dab2/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2024-12-02 08:39:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:39:16,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 08:39:16,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:39:16,135 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 [2024-12-02 08:39:16,206 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:39:16,206 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 33 treesize of output 35 [2024-12-02 08:39:16,393 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:39:16,393 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 59 treesize of output 43 [2024-12-02 08:39:16,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:39:16,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 53 [2024-12-02 08:39:20,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:39:20,558 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 73 treesize of output 64 [2024-12-02 08:39:28,917 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 389 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-12-02 08:39:28,917 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:39:28,917 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:39:28,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873447018] [2024-12-02 08:39:28,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873447018] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:39:28,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:39:28,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 08:39:28,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85304291] [2024-12-02 08:39:28,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:39:28,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 08:39:28,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:39:28,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 08:39:28,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=96, Unknown=3, NotChecked=0, Total=132 [2024-12-02 08:39:28,918 INFO L87 Difference]: Start difference. First operand 1680 states and 1954 transitions. Second operand has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 12 states have internal predecessors, (94), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 08:39:33,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:39:37,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:39:41,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:39:45,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:39:49,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:39:53,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:39:57,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:40:01,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:40:05,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:40:09,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:40:13,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:40:17,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:40:21,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:40:25,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:40:29,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:40:33,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:40:37,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:40:41,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:40:45,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:40:49,729 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 [0]