./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-46.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_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-46.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB --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 4a633b68302485b97355fcc8c9ab86b75c4bb68dbf6f93417fd79b2d2487527c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:45:46,732 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:45:46,816 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:45:46,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:45:46,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:45:46,859 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:45:46,861 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:45:46,861 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:45:46,862 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:45:46,863 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:45:46,863 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:45:46,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:45:46,864 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:45:46,865 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:45:46,865 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:45:46,865 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:45:46,865 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:45:46,865 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:45:46,865 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:45:46,865 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:45:46,865 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:45:46,866 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:45:46,866 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:45:46,866 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:45:46,866 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:45:46,866 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:45:46,866 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:45:46,866 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:45:46,866 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:45:46,866 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:45:46,866 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:45:46,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:45:46,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:45:46,868 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:45:46,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:45:46,868 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:45:46,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:45:46,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:45:46,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:45:46,869 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:45:46,869 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:45:46,869 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:45:46,869 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:45:46,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:45:46,870 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:45:46,870 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:45:46,870 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:45:46,870 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:45:46,870 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_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 4a633b68302485b97355fcc8c9ab86b75c4bb68dbf6f93417fd79b2d2487527c [2024-11-28 04:45:47,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:45:47,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:45:47,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:45:47,233 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:45:47,233 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:45:47,236 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-46.i [2024-11-28 04:45:50,283 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/data/9c8c8c2db/557aef787c054dc8af7d777bab7be811/FLAG359d4ff9c [2024-11-28 04:45:50,552 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:45:50,553 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-46.i [2024-11-28 04:45:50,560 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/data/9c8c8c2db/557aef787c054dc8af7d777bab7be811/FLAG359d4ff9c [2024-11-28 04:45:50,576 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/data/9c8c8c2db/557aef787c054dc8af7d777bab7be811 [2024-11-28 04:45:50,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:45:50,581 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:45:50,582 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:45:50,583 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:45:50,588 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:45:50,589 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:45:50" (1/1) ... [2024-11-28 04:45:50,590 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d24fc17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:50, skipping insertion in model container [2024-11-28 04:45:50,590 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:45:50" (1/1) ... [2024-11-28 04:45:50,613 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:45:50,761 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_8c36d01f-4567-43b5-be2c-f94ef0da382f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-46.i[916,929] [2024-11-28 04:45:50,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:45:50,830 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:45:50,841 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_8c36d01f-4567-43b5-be2c-f94ef0da382f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-46.i[916,929] [2024-11-28 04:45:50,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:45:50,898 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:45:50,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:50 WrapperNode [2024-11-28 04:45:50,899 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:45:50,901 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:45:50,902 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:45:50,902 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:45:50,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:50" (1/1) ... [2024-11-28 04:45:50,920 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:50" (1/1) ... [2024-11-28 04:45:50,958 INFO L138 Inliner]: procedures = 29, calls = 137, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 426 [2024-11-28 04:45:50,958 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:45:50,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:45:50,959 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:45:50,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:45:50,970 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:50" (1/1) ... [2024-11-28 04:45:50,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:50" (1/1) ... [2024-11-28 04:45:50,975 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:50" (1/1) ... [2024-11-28 04:45:50,997 INFO L175 MemorySlicer]: Split 101 memory accesses to 12 slices as follows [2, 12, 8, 17, 8, 8, 3, 6, 6, 8, 17, 6]. 17 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 16 writes are split as follows [0, 5, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1]. [2024-11-28 04:45:50,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:50" (1/1) ... [2024-11-28 04:45:50,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:50" (1/1) ... [2024-11-28 04:45:51,014 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:50" (1/1) ... [2024-11-28 04:45:51,016 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:50" (1/1) ... [2024-11-28 04:45:51,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:50" (1/1) ... [2024-11-28 04:45:51,024 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:50" (1/1) ... [2024-11-28 04:45:51,026 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:50" (1/1) ... [2024-11-28 04:45:51,032 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:45:51,033 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:45:51,033 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:45:51,033 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:45:51,034 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:50" (1/1) ... [2024-11-28 04:45:51,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:45:51,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:51,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:45:51,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:45:51,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:45:51,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-11-28 04:45:51,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-11-28 04:45:51,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-11-28 04:45:51,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-11-28 04:45:51,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-11-28 04:45:51,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-11-28 04:45:51,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-11-28 04:45:51,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-11-28 04:45:51,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-11-28 04:45:51,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-11-28 04:45:51,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-11-28 04:45:51,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-11-28 04:45:51,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:45:51,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:45:51,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:45:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:45:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 04:45:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 04:45:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 04:45:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-28 04:45:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-28 04:45:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-28 04:45:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-28 04:45:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-28 04:45:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-11-28 04:45:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-11-28 04:45:51,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-11-28 04:45:51,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-11-28 04:45:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-11-28 04:45:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-11-28 04:45:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-11-28 04:45:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-11-28 04:45:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-11-28 04:45:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-11-28 04:45:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-11-28 04:45:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-11-28 04:45:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:45:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:45:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:45:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:45:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 04:45:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 04:45:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 04:45:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-28 04:45:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-28 04:45:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-28 04:45:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-28 04:45:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-28 04:45:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-11-28 04:45:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-11-28 04:45:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-11-28 04:45:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-11-28 04:45:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-11-28 04:45:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-11-28 04:45:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-11-28 04:45:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-11-28 04:45:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-11-28 04:45:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-11-28 04:45:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-11-28 04:45:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-11-28 04:45:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:45:51,125 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:45:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:45:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:45:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:45:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:45:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:45:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 04:45:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 04:45:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 04:45:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 04:45:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 04:45:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 04:45:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 04:45:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:45:51,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:45:51,411 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:45:51,413 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:45:52,162 INFO L? ?]: Removed 100 outVars from TransFormulas that were not future-live. [2024-11-28 04:45:52,165 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:45:52,187 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:45:52,189 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:45:52,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:45:52 BoogieIcfgContainer [2024-11-28 04:45:52,190 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:45:52,192 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:45:52,194 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:45:52,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:45:52,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:45:50" (1/3) ... [2024-11-28 04:45:52,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc6a5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:45:52, skipping insertion in model container [2024-11-28 04:45:52,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:50" (2/3) ... [2024-11-28 04:45:52,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc6a5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:45:52, skipping insertion in model container [2024-11-28 04:45:52,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:45:52" (3/3) ... [2024-11-28 04:45:52,207 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-46.i [2024-11-28 04:45:52,226 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:45:52,228 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-p_file-46.i that has 2 procedures, 101 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:45:52,293 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:45:52,308 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;@30505346, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:45:52,308 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:45:52,313 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 84 states have (on average 1.4166666666666667) internal successors, (119), 85 states have internal predecessors, (119), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:45:52,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 04:45:52,325 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:52,326 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:52,326 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:52,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:52,332 INFO L85 PathProgramCache]: Analyzing trace with hash 302560543, now seen corresponding path program 1 times [2024-11-28 04:45:52,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:52,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602163681] [2024-11-28 04:45:52,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:52,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:52,776 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-11-28 04:45:52,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:52,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602163681] [2024-11-28 04:45:52,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602163681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:52,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979440118] [2024-11-28 04:45:52,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:52,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:52,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:52,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:52,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:45:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:53,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:45:53,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:53,231 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-11-28 04:45:53,231 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:45:53,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979440118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:53,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:45:53,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 04:45:53,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294232265] [2024-11-28 04:45:53,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:53,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:45:53,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:53,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:45:53,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:45:53,271 INFO L87 Difference]: Start difference. First operand has 101 states, 84 states have (on average 1.4166666666666667) internal successors, (119), 85 states have internal predecessors, (119), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:45:53,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:53,299 INFO L93 Difference]: Finished difference Result 195 states and 302 transitions. [2024-11-28 04:45:53,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:45:53,301 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 116 [2024-11-28 04:45:53,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:53,309 INFO L225 Difference]: With dead ends: 195 [2024-11-28 04:45:53,309 INFO L226 Difference]: Without dead ends: 97 [2024-11-28 04:45:53,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:45:53,316 INFO L435 NwaCegarLoop]: 140 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, 140 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:53,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:45:53,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-28 04:45:53,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-28 04:45:53,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 81 states have (on average 1.382716049382716) internal successors, (112), 81 states have internal predecessors, (112), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:45:53,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 140 transitions. [2024-11-28 04:45:53,363 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 140 transitions. Word has length 116 [2024-11-28 04:45:53,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:53,364 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 140 transitions. [2024-11-28 04:45:53,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:45:53,364 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 140 transitions. [2024-11-28 04:45:53,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 04:45:53,371 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:53,371 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:53,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:45:53,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:53,572 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:53,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:53,573 INFO L85 PathProgramCache]: Analyzing trace with hash 81671171, now seen corresponding path program 1 times [2024-11-28 04:45:53,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:53,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920659020] [2024-11-28 04:45:53,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:53,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:45:55,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:55,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920659020] [2024-11-28 04:45:55,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920659020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:55,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:55,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 04:45:55,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842781088] [2024-11-28 04:45:55,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:55,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:45:55,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:55,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:45:55,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:45:55,014 INFO L87 Difference]: Start difference. First operand 97 states and 140 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:45:55,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:55,560 INFO L93 Difference]: Finished difference Result 348 states and 504 transitions. [2024-11-28 04:45:55,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:45:55,561 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 116 [2024-11-28 04:45:55,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:55,566 INFO L225 Difference]: With dead ends: 348 [2024-11-28 04:45:55,567 INFO L226 Difference]: Without dead ends: 254 [2024-11-28 04:45:55,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:45:55,570 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 382 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:55,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 875 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:45:55,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-28 04:45:55,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 249. [2024-11-28 04:45:55,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 216 states have (on average 1.412037037037037) internal successors, (305), 217 states have internal predecessors, (305), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-28 04:45:55,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 363 transitions. [2024-11-28 04:45:55,621 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 363 transitions. Word has length 116 [2024-11-28 04:45:55,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:55,622 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 363 transitions. [2024-11-28 04:45:55,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:45:55,624 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 363 transitions. [2024-11-28 04:45:55,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 04:45:55,629 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:55,629 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:55,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:45:55,630 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:55,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:55,630 INFO L85 PathProgramCache]: Analyzing trace with hash -505134843, now seen corresponding path program 1 times [2024-11-28 04:45:55,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:55,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977396106] [2024-11-28 04:45:55,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:55,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:56,442 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:45:56,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:56,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977396106] [2024-11-28 04:45:56,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977396106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:56,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:56,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:45:56,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097172458] [2024-11-28 04:45:56,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:56,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:45:56,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:56,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:45:56,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:45:56,449 INFO L87 Difference]: Start difference. First operand 249 states and 363 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:45:56,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:56,650 INFO L93 Difference]: Finished difference Result 747 states and 1092 transitions. [2024-11-28 04:45:56,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:45:56,651 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 116 [2024-11-28 04:45:56,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:56,659 INFO L225 Difference]: With dead ends: 747 [2024-11-28 04:45:56,659 INFO L226 Difference]: Without dead ends: 501 [2024-11-28 04:45:56,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:45:56,664 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 129 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:56,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 575 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:45:56,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2024-11-28 04:45:56,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 285. [2024-11-28 04:45:56,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 252 states have (on average 1.4087301587301588) internal successors, (355), 253 states have internal predecessors, (355), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-28 04:45:56,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 413 transitions. [2024-11-28 04:45:56,728 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 413 transitions. Word has length 116 [2024-11-28 04:45:56,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:56,728 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 413 transitions. [2024-11-28 04:45:56,733 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:45:56,733 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 413 transitions. [2024-11-28 04:45:56,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-28 04:45:56,735 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:56,735 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:56,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:45:56,735 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:56,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:56,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1577287888, now seen corresponding path program 1 times [2024-11-28 04:45:56,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:56,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004959253] [2024-11-28 04:45:56,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:56,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:45:56,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419153529] [2024-11-28 04:45:56,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:56,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:56,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:56,890 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:56,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:45:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:57,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:45:57,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:59,014 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 77 treesize of output 45 [2024-11-28 04:46:29,726 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 64 treesize of output 48 [2024-11-28 04:46:39,573 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:46:39,573 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:46:39,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:39,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004959253] [2024-11-28 04:46:39,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:46:39,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419153529] [2024-11-28 04:46:39,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419153529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:39,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:39,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:46:39,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771860169] [2024-11-28 04:46:39,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:39,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:46:39,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:39,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:46:39,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=44, Unknown=9, NotChecked=0, Total=72 [2024-11-28 04:46:39,584 INFO L87 Difference]: Start difference. First operand 285 states and 413 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:46:44,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:46:48,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:46:53,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:46:57,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:47:01,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:47:05,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:47:10,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:47:14,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:47:18,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:47:22,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:47:26,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:47:31,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:47:35,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:47:40,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:47:45,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:47:49,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:47:53,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:47:57,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:48:02,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:48:06,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:48:15,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:48:19,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:48:24,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:48:28,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:48:33,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:48:37,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:48:41,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:48:45,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:48:50,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:49:08,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:49:13,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:49:17,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:49:21,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:49:26,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:49:30,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:49:35,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:49:39,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:49:52,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:49:56,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:01,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:05,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:10,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:14,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:19,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:23,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:28,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:32,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:36,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:40,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:45,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:49,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:53,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:58,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:51:03,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:51:07,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:51:12,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:51:16,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:51:21,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:51:25,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:51:30,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:51:34,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:51:39,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:51:43,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:51:48,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:51:52,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:51:57,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:52:01,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:52:05,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:52:10,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:52:15,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:52:19,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:52:24,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:52:28,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:52:32,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:52:37,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:52:41,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:52:46,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:52:50,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:52:55,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:52:59,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:53:03,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-28 04:53:03,452 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-28 04:53:03,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 67.5s TimeCoverageRelationStatistics Valid=36, Invalid=81, Unknown=15, NotChecked=0, Total=132 [2024-11-28 04:53:03,454 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 112 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 0 mSolverCounterUnsat, 80 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 332.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 80 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 352.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:03,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 728 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 328 Invalid, 80 Unknown, 0 Unchecked, 352.7s Time] [2024-11-28 04:53:03,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:53:03,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:03,656 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:665) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1708) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:388) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:447) at java.base/java.io.OutputStream.write(OutputStream.java:167) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:125) at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:252) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:246) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:412) at java.base/sun.nio.cs.StreamEncoder.lockedFlush(StreamEncoder.java:214) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:201) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:262) at java.base/java.io.BufferedWriter.implFlush(BufferedWriter.java:372) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:359) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-11-28 04:53:03,661 INFO L158 Benchmark]: Toolchain (without parser) took 433079.83ms. Allocated memory was 117.4MB in the beginning and 151.0MB in the end (delta: 33.6MB). Free memory was 92.0MB in the beginning and 47.0MB in the end (delta: 45.0MB). Peak memory consumption was 79.5MB. Max. memory is 16.1GB. [2024-11-28 04:53:03,661 INFO L158 Benchmark]: CDTParser took 0.69ms. Allocated memory is still 117.4MB. Free memory is still 72.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:53:03,661 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.37ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 77.8MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 04:53:03,661 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.44ms. Allocated memory is still 117.4MB. Free memory was 77.8MB in the beginning and 75.1MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:53:03,662 INFO L158 Benchmark]: Boogie Preprocessor took 73.11ms. Allocated memory is still 117.4MB. Free memory was 75.1MB in the beginning and 70.9MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:53:03,662 INFO L158 Benchmark]: RCFGBuilder took 1157.43ms. Allocated memory is still 117.4MB. Free memory was 70.9MB in the beginning and 87.9MB in the end (delta: -17.1MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. [2024-11-28 04:53:03,662 INFO L158 Benchmark]: TraceAbstraction took 431467.60ms. Allocated memory was 117.4MB in the beginning and 151.0MB in the end (delta: 33.6MB). Free memory was 87.4MB in the beginning and 47.0MB in the end (delta: 40.4MB). Peak memory consumption was 73.5MB. Max. memory is 16.1GB. [2024-11-28 04:53:03,663 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69ms. Allocated memory is still 117.4MB. Free memory is still 72.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.37ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 77.8MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.44ms. Allocated memory is still 117.4MB. Free memory was 77.8MB in the beginning and 75.1MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 73.11ms. Allocated memory is still 117.4MB. Free memory was 75.1MB in the beginning and 70.9MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1157.43ms. Allocated memory is still 117.4MB. Free memory was 70.9MB in the beginning and 87.9MB in the end (delta: -17.1MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. * TraceAbstraction took 431467.60ms. Allocated memory was 117.4MB in the beginning and 151.0MB in the end (delta: 33.6MB). Free memory was 87.4MB in the beginning and 47.0MB in the end (delta: 40.4MB). Peak memory consumption was 73.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-46.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB --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 4a633b68302485b97355fcc8c9ab86b75c4bb68dbf6f93417fd79b2d2487527c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:53:06,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:53:06,177 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-28 04:53:06,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:53:06,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:53:06,215 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:53:06,216 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:53:06,216 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:53:06,216 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:53:06,216 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:53:06,217 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:53:06,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:53:06,217 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:53:06,217 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:53:06,217 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:53:06,218 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:53:06,218 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:53:06,218 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:53:06,218 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:53:06,218 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:53:06,218 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:53:06,219 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:53:06,219 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:53:06,219 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:53:06,219 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 04:53:06,219 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 04:53:06,219 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:53:06,219 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:53:06,220 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:53:06,220 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:53:06,220 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:53:06,220 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:53:06,220 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:53:06,220 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:53:06,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:53:06,221 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:53:06,221 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:53:06,221 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:53:06,221 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:53:06,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:53:06,221 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:53:06,222 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:53:06,222 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:53:06,222 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:53:06,222 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 04:53:06,222 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 04:53:06,222 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:53:06,222 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:53:06,223 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:53:06,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:53:06,223 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_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 4a633b68302485b97355fcc8c9ab86b75c4bb68dbf6f93417fd79b2d2487527c [2024-11-28 04:53:06,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:53:06,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:53:06,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:53:06,509 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:53:06,510 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:53:06,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-46.i [2024-11-28 04:53:09,522 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/data/41cdfce35/6a2f045eb6e04113aa4f8be8c0e1a34b/FLAGead107d06 [2024-11-28 04:53:09,833 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:53:09,835 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-46.i [2024-11-28 04:53:09,844 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/data/41cdfce35/6a2f045eb6e04113aa4f8be8c0e1a34b/FLAGead107d06 [2024-11-28 04:53:10,089 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/data/41cdfce35/6a2f045eb6e04113aa4f8be8c0e1a34b [2024-11-28 04:53:10,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:53:10,094 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:53:10,096 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:53:10,097 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:53:10,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:53:10,103 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:53:10" (1/1) ... [2024-11-28 04:53:10,104 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12ce0490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:10, skipping insertion in model container [2024-11-28 04:53:10,104 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:53:10" (1/1) ... [2024-11-28 04:53:10,128 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:53:10,300 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_8c36d01f-4567-43b5-be2c-f94ef0da382f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-46.i[916,929] [2024-11-28 04:53:10,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:53:10,411 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:53:10,425 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_8c36d01f-4567-43b5-be2c-f94ef0da382f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-46.i[916,929] [2024-11-28 04:53:10,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:53:10,500 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:53:10,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:10 WrapperNode [2024-11-28 04:53:10,501 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:53:10,501 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:53:10,502 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:53:10,504 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:53:10,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:10" (1/1) ... [2024-11-28 04:53:10,530 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:10" (1/1) ... [2024-11-28 04:53:10,577 INFO L138 Inliner]: procedures = 33, calls = 137, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 405 [2024-11-28 04:53:10,577 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:53:10,578 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:53:10,578 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:53:10,578 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:53:10,587 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:10" (1/1) ... [2024-11-28 04:53:10,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:10" (1/1) ... [2024-11-28 04:53:10,601 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:10" (1/1) ... [2024-11-28 04:53:10,636 INFO L175 MemorySlicer]: Split 101 memory accesses to 12 slices as follows [2, 12, 8, 17, 8, 8, 3, 6, 6, 8, 17, 6]. 17 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 16 writes are split as follows [0, 5, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1]. [2024-11-28 04:53:10,636 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:10" (1/1) ... [2024-11-28 04:53:10,636 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:10" (1/1) ... [2024-11-28 04:53:10,673 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:10" (1/1) ... [2024-11-28 04:53:10,675 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:10" (1/1) ... [2024-11-28 04:53:10,681 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:10" (1/1) ... [2024-11-28 04:53:10,693 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:10" (1/1) ... [2024-11-28 04:53:10,696 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:10" (1/1) ... [2024-11-28 04:53:10,713 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:53:10,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:53:10,714 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:53:10,714 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:53:10,715 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:10" (1/1) ... [2024-11-28 04:53:10,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:53:10,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:53:10,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:53:10,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:53:10,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:53:10,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2024-11-28 04:53:10,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2024-11-28 04:53:10,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2024-11-28 04:53:10,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2024-11-28 04:53:10,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2024-11-28 04:53:10,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#5 [2024-11-28 04:53:10,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#6 [2024-11-28 04:53:10,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#7 [2024-11-28 04:53:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#8 [2024-11-28 04:53:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#9 [2024-11-28 04:53:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#10 [2024-11-28 04:53:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#11 [2024-11-28 04:53:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2024-11-28 04:53:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2024-11-28 04:53:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2024-11-28 04:53:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2024-11-28 04:53:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2024-11-28 04:53:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#5 [2024-11-28 04:53:10,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#6 [2024-11-28 04:53:10,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#7 [2024-11-28 04:53:10,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#8 [2024-11-28 04:53:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#9 [2024-11-28 04:53:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#10 [2024-11-28 04:53:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#11 [2024-11-28 04:53:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-28 04:53:10,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-28 04:53:10,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-28 04:53:10,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2024-11-28 04:53:10,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2024-11-28 04:53:10,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2024-11-28 04:53:10,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2024-11-28 04:53:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2024-11-28 04:53:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#8 [2024-11-28 04:53:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#9 [2024-11-28 04:53:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#10 [2024-11-28 04:53:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#11 [2024-11-28 04:53:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2024-11-28 04:53:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2024-11-28 04:53:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2024-11-28 04:53:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2024-11-28 04:53:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2024-11-28 04:53:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2024-11-28 04:53:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2024-11-28 04:53:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#7 [2024-11-28 04:53:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#8 [2024-11-28 04:53:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#9 [2024-11-28 04:53:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#10 [2024-11-28 04:53:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#11 [2024-11-28 04:53:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 04:53:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 04:53:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-28 04:53:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-28 04:53:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-11-28 04:53:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2024-11-28 04:53:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2024-11-28 04:53:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2024-11-28 04:53:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2024-11-28 04:53:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2024-11-28 04:53:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2024-11-28 04:53:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#11 [2024-11-28 04:53:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2024-11-28 04:53:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2024-11-28 04:53:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2024-11-28 04:53:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2024-11-28 04:53:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2024-11-28 04:53:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#5 [2024-11-28 04:53:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#6 [2024-11-28 04:53:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#7 [2024-11-28 04:53:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#8 [2024-11-28 04:53:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#9 [2024-11-28 04:53:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#10 [2024-11-28 04:53:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#11 [2024-11-28 04:53:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2024-11-28 04:53:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2024-11-28 04:53:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2024-11-28 04:53:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2024-11-28 04:53:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2024-11-28 04:53:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2024-11-28 04:53:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2024-11-28 04:53:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#7 [2024-11-28 04:53:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#8 [2024-11-28 04:53:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#9 [2024-11-28 04:53:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#10 [2024-11-28 04:53:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#11 [2024-11-28 04:53:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:53:10,797 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:53:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:53:10,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:53:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-28 04:53:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-28 04:53:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-11-28 04:53:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2024-11-28 04:53:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2024-11-28 04:53:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2024-11-28 04:53:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2024-11-28 04:53:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2024-11-28 04:53:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#8 [2024-11-28 04:53:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#9 [2024-11-28 04:53:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#10 [2024-11-28 04:53:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#11 [2024-11-28 04:53:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2024-11-28 04:53:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2024-11-28 04:53:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2024-11-28 04:53:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2024-11-28 04:53:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2024-11-28 04:53:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2024-11-28 04:53:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2024-11-28 04:53:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#7 [2024-11-28 04:53:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#8 [2024-11-28 04:53:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#9 [2024-11-28 04:53:10,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#10 [2024-11-28 04:53:10,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#11 [2024-11-28 04:53:11,016 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:53:11,018 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:53:11,877 INFO L? ?]: Removed 90 outVars from TransFormulas that were not future-live. [2024-11-28 04:53:11,877 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:53:11,891 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:53:11,892 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:53:11,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:53:11 BoogieIcfgContainer [2024-11-28 04:53:11,893 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:53:11,895 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:53:11,896 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:53:11,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:53:11,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:53:10" (1/3) ... [2024-11-28 04:53:11,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44020504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:53:11, skipping insertion in model container [2024-11-28 04:53:11,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:10" (2/3) ... [2024-11-28 04:53:11,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44020504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:53:11, skipping insertion in model container [2024-11-28 04:53:11,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:53:11" (3/3) ... [2024-11-28 04:53:11,905 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-46.i [2024-11-28 04:53:11,920 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:53:11,921 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-p_file-46.i that has 2 procedures, 93 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:53:11,998 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:53:12,014 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;@1c393df9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:53:12,015 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:53:12,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 76 states have (on average 1.4078947368421053) internal successors, (107), 77 states have internal predecessors, (107), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:53:12,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-28 04:53:12,034 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:12,038 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:12,039 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:12,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:12,046 INFO L85 PathProgramCache]: Analyzing trace with hash -644425847, now seen corresponding path program 1 times [2024-11-28 04:53:12,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:53:12,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426112015] [2024-11-28 04:53:12,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:12,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:12,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:53:12,070 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:53:12,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-28 04:53:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:12,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:53:12,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-11-28 04:53:12,557 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:53:12,557 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:53:12,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426112015] [2024-11-28 04:53:12,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426112015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:12,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:12,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:53:12,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761376413] [2024-11-28 04:53:12,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:12,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:53:12,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:53:12,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:53:12,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:53:12,587 INFO L87 Difference]: Start difference. First operand has 93 states, 76 states have (on average 1.4078947368421053) internal successors, (107), 77 states have internal predecessors, (107), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:53:12,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:12,615 INFO L93 Difference]: Finished difference Result 179 states and 278 transitions. [2024-11-28 04:53:12,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:53:12,617 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2024-11-28 04:53:12,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:12,624 INFO L225 Difference]: With dead ends: 179 [2024-11-28 04:53:12,624 INFO L226 Difference]: Without dead ends: 89 [2024-11-28 04:53:12,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:53:12,630 INFO L435 NwaCegarLoop]: 128 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, 128 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:12,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:53:12,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-28 04:53:12,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-28 04:53:12,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 73 states have (on average 1.36986301369863) internal successors, (100), 73 states have internal predecessors, (100), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:53:12,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 128 transitions. [2024-11-28 04:53:12,715 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 128 transitions. Word has length 114 [2024-11-28 04:53:12,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:12,715 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 128 transitions. [2024-11-28 04:53:12,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:53:12,717 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 128 transitions. [2024-11-28 04:53:12,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-28 04:53:12,721 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:12,722 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:12,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-28 04:53:12,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:12,923 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:12,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:12,924 INFO L85 PathProgramCache]: Analyzing trace with hash -658063507, now seen corresponding path program 1 times [2024-11-28 04:53:12,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:53:12,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960637624] [2024-11-28 04:53:12,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:12,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:12,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:53:12,929 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:53:12,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-28 04:53:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:13,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 04:53:13,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:13,918 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 24 treesize of output 16 [2024-11-28 04:53:13,930 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 44 treesize of output 24 [2024-11-28 04:53:14,001 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:53:14,001 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:53:14,001 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:53:14,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960637624] [2024-11-28 04:53:14,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960637624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:14,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:14,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:53:14,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948926924] [2024-11-28 04:53:14,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:14,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:53:14,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:53:14,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:53:14,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:53:14,005 INFO L87 Difference]: Start difference. First operand 89 states and 128 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:14,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:14,702 INFO L93 Difference]: Finished difference Result 316 states and 456 transitions. [2024-11-28 04:53:14,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:53:14,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 114 [2024-11-28 04:53:14,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:14,706 INFO L225 Difference]: With dead ends: 316 [2024-11-28 04:53:14,706 INFO L226 Difference]: Without dead ends: 230 [2024-11-28 04:53:14,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:53:14,707 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 144 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:14,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 532 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:53:14,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-28 04:53:14,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 225. [2024-11-28 04:53:14,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 192 states have (on average 1.4010416666666667) internal successors, (269), 193 states have internal predecessors, (269), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-28 04:53:14,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 327 transitions. [2024-11-28 04:53:14,770 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 327 transitions. Word has length 114 [2024-11-28 04:53:14,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:14,770 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 327 transitions. [2024-11-28 04:53:14,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:14,771 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 327 transitions. [2024-11-28 04:53:14,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-28 04:53:14,776 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:14,777 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:14,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:53:14,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:14,977 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:14,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:14,978 INFO L85 PathProgramCache]: Analyzing trace with hash 621800171, now seen corresponding path program 1 times [2024-11-28 04:53:14,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:53:14,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778801097] [2024-11-28 04:53:14,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:14,979 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:14,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:53:14,984 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:53:14,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-28 04:53:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:15,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:53:15,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:15,773 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 17 treesize of output 9 [2024-11-28 04:53:15,844 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 13 [2024-11-28 04:53:15,887 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:53:15,887 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:53:15,888 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:53:15,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778801097] [2024-11-28 04:53:15,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778801097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:15,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:15,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:53:15,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525171660] [2024-11-28 04:53:15,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:15,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:53:15,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:53:15,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:53:15,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:53:15,893 INFO L87 Difference]: Start difference. First operand 225 states and 327 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:16,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:16,368 INFO L93 Difference]: Finished difference Result 452 states and 654 transitions. [2024-11-28 04:53:16,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:53:16,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 114 [2024-11-28 04:53:16,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:16,373 INFO L225 Difference]: With dead ends: 452 [2024-11-28 04:53:16,373 INFO L226 Difference]: Without dead ends: 230 [2024-11-28 04:53:16,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:53:16,379 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 201 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:16,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 588 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:53:16,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-28 04:53:16,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 225. [2024-11-28 04:53:16,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 192 states have (on average 1.3958333333333333) internal successors, (268), 193 states have internal predecessors, (268), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-28 04:53:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 326 transitions. [2024-11-28 04:53:16,429 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 326 transitions. Word has length 114 [2024-11-28 04:53:16,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:16,430 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 326 transitions. [2024-11-28 04:53:16,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 326 transitions. [2024-11-28 04:53:16,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-28 04:53:16,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:16,438 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:16,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:53:16,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:16,638 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:16,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:16,639 INFO L85 PathProgramCache]: Analyzing trace with hash 34994157, now seen corresponding path program 1 times [2024-11-28 04:53:16,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:53:16,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780150199] [2024-11-28 04:53:16,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:16,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:16,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:53:16,643 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:53:16,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-28 04:53:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:17,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:53:17,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:17,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-28 04:53:17,130 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 37 treesize of output 25 [2024-11-28 04:53:17,164 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:53:17,165 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:53:17,165 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:53:17,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780150199] [2024-11-28 04:53:17,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780150199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:17,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:17,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:53:17,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80630811] [2024-11-28 04:53:17,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:17,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:53:17,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:53:17,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:53:17,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:53:17,169 INFO L87 Difference]: Start difference. First operand 225 states and 326 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:17,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:17,377 INFO L93 Difference]: Finished difference Result 675 states and 981 transitions. [2024-11-28 04:53:17,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:53:17,378 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 114 [2024-11-28 04:53:17,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:17,386 INFO L225 Difference]: With dead ends: 675 [2024-11-28 04:53:17,386 INFO L226 Difference]: Without dead ends: 453 [2024-11-28 04:53:17,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:53:17,391 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 119 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:17,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 509 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:53:17,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2024-11-28 04:53:17,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 249. [2024-11-28 04:53:17,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 216 states have (on average 1.3842592592592593) internal successors, (299), 217 states have internal predecessors, (299), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-28 04:53:17,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 357 transitions. [2024-11-28 04:53:17,457 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 357 transitions. Word has length 114 [2024-11-28 04:53:17,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:17,459 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 357 transitions. [2024-11-28 04:53:17,459 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:17,459 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 357 transitions. [2024-11-28 04:53:17,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 04:53:17,462 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:17,463 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:17,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-28 04:53:17,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:17,663 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:17,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:17,664 INFO L85 PathProgramCache]: Analyzing trace with hash 158101208, now seen corresponding path program 1 times [2024-11-28 04:53:17,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:53:17,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993259415] [2024-11-28 04:53:17,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:17,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:17,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:53:17,667 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:53:17,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-28 04:53:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:17,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 04:53:17,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:19,841 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:53:19,841 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 94 treesize of output 34 [2024-11-28 04:53:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:53:19,930 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:53:19,930 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:53:19,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993259415] [2024-11-28 04:53:19,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993259415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:19,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:19,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:53:19,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885804318] [2024-11-28 04:53:19,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:19,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:53:19,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:53:19,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:53:19,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:53:19,933 INFO L87 Difference]: Start difference. First operand 249 states and 357 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:21,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:21,701 INFO L93 Difference]: Finished difference Result 839 states and 1202 transitions. [2024-11-28 04:53:21,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:53:21,702 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 116 [2024-11-28 04:53:21,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:21,708 INFO L225 Difference]: With dead ends: 839 [2024-11-28 04:53:21,708 INFO L226 Difference]: Without dead ends: 593 [2024-11-28 04:53:21,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:53:21,712 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 323 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:21,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 867 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 04:53:21,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-11-28 04:53:21,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 373. [2024-11-28 04:53:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 308 states have (on average 1.3603896103896105) internal successors, (419), 310 states have internal predecessors, (419), 58 states have call successors, (58), 6 states have call predecessors, (58), 6 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-28 04:53:21,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 535 transitions. [2024-11-28 04:53:21,772 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 535 transitions. Word has length 116 [2024-11-28 04:53:21,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:21,772 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 535 transitions. [2024-11-28 04:53:21,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:21,775 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 535 transitions. [2024-11-28 04:53:21,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 04:53:21,779 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:21,780 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:21,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-28 04:53:21,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:21,981 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:21,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:21,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2003353656, now seen corresponding path program 1 times [2024-11-28 04:53:21,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:53:21,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891208876] [2024-11-28 04:53:21,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:21,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:21,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:53:21,984 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:53:21,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-28 04:53:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:22,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:53:22,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:22,448 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 19 treesize of output 11 [2024-11-28 04:53:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-28 04:53:22,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:23,047 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:53:23,047 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:53:23,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891208876] [2024-11-28 04:53:23,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891208876] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:23,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:53:23,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2024-11-28 04:53:23,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844806688] [2024-11-28 04:53:23,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:23,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:53:23,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:53:23,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:53:23,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:53:23,049 INFO L87 Difference]: Start difference. First operand 373 states and 535 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:23,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:23,269 INFO L93 Difference]: Finished difference Result 857 states and 1218 transitions. [2024-11-28 04:53:23,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:53:23,270 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 116 [2024-11-28 04:53:23,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:23,273 INFO L225 Difference]: With dead ends: 857 [2024-11-28 04:53:23,273 INFO L226 Difference]: Without dead ends: 487 [2024-11-28 04:53:23,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:53:23,275 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 112 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:23,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 339 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:53:23,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2024-11-28 04:53:23,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 427. [2024-11-28 04:53:23,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 358 states have (on average 1.3575418994413408) internal successors, (486), 362 states have internal predecessors, (486), 60 states have call successors, (60), 8 states have call predecessors, (60), 8 states have return successors, (60), 56 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 04:53:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 606 transitions. [2024-11-28 04:53:23,323 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 606 transitions. Word has length 116 [2024-11-28 04:53:23,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:23,324 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 606 transitions. [2024-11-28 04:53:23,325 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:23,325 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 606 transitions. [2024-11-28 04:53:23,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 04:53:23,327 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:23,327 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:23,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -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 [2024-11-28 04:53:23,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:23,528 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:23,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:23,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1898586630, now seen corresponding path program 1 times [2024-11-28 04:53:23,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:53:23,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020185912] [2024-11-28 04:53:23,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:23,529 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:23,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:53:23,531 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:53:23,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-28 04:53:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:23,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:53:23,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:23,857 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:53:23,858 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:53:23,858 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:53:23,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020185912] [2024-11-28 04:53:23,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020185912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:23,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:23,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:53:23,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569413117] [2024-11-28 04:53:23,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:23,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:53:23,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:53:23,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:53:23,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:53:23,860 INFO L87 Difference]: Start difference. First operand 427 states and 606 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:23,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:23,946 INFO L93 Difference]: Finished difference Result 861 states and 1223 transitions. [2024-11-28 04:53:23,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:53:23,947 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 116 [2024-11-28 04:53:23,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:23,952 INFO L225 Difference]: With dead ends: 861 [2024-11-28 04:53:23,954 INFO L226 Difference]: Without dead ends: 437 [2024-11-28 04:53:23,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:53:23,955 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 0 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:23,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 483 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:53:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-11-28 04:53:24,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2024-11-28 04:53:24,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 368 states have (on average 1.3478260869565217) internal successors, (496), 372 states have internal predecessors, (496), 60 states have call successors, (60), 8 states have call predecessors, (60), 8 states have return successors, (60), 56 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 04:53:24,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 616 transitions. [2024-11-28 04:53:24,017 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 616 transitions. Word has length 116 [2024-11-28 04:53:24,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:24,017 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 616 transitions. [2024-11-28 04:53:24,017 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:24,018 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 616 transitions. [2024-11-28 04:53:24,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 04:53:24,019 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:24,019 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:24,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-28 04:53:24,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:24,220 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:24,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:24,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1889136054, now seen corresponding path program 1 times [2024-11-28 04:53:24,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:53:24,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839692421] [2024-11-28 04:53:24,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:24,221 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:24,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:53:24,225 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:53:24,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-28 04:53:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:24,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:53:24,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:25,473 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 17 treesize of output 13 [2024-11-28 04:53:25,582 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 72 treesize of output 52 [2024-11-28 04:53:25,587 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 42 treesize of output 30 [2024-11-28 04:53:25,660 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 28 proven. 192 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-28 04:53:25,660 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:25,868 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:53:25,868 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:53:25,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839692421] [2024-11-28 04:53:25,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839692421] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:25,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:53:25,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 18 [2024-11-28 04:53:25,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794834025] [2024-11-28 04:53:25,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:25,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:53:25,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:53:25,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:53:25,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:53:25,870 INFO L87 Difference]: Start difference. First operand 437 states and 616 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:26,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:26,101 INFO L93 Difference]: Finished difference Result 972 states and 1359 transitions. [2024-11-28 04:53:26,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:53:26,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 116 [2024-11-28 04:53:26,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:26,105 INFO L225 Difference]: With dead ends: 972 [2024-11-28 04:53:26,105 INFO L226 Difference]: Without dead ends: 538 [2024-11-28 04:53:26,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:53:26,107 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 80 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:26,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 738 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:53:26,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-28 04:53:26,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 526. [2024-11-28 04:53:26,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 421 states have (on average 1.3135391923990498) internal successors, (553), 427 states have internal predecessors, (553), 90 states have call successors, (90), 14 states have call predecessors, (90), 14 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-28 04:53:26,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 733 transitions. [2024-11-28 04:53:26,161 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 733 transitions. Word has length 116 [2024-11-28 04:53:26,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:26,162 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 733 transitions. [2024-11-28 04:53:26,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:26,163 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 733 transitions. [2024-11-28 04:53:26,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 04:53:26,166 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:26,166 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:26,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-11-28 04:53:26,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:26,367 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:26,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:26,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1489261734, now seen corresponding path program 1 times [2024-11-28 04:53:26,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:53:26,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141474266] [2024-11-28 04:53:26,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:26,368 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:26,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:53:26,370 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:53:26,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-28 04:53:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:26,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:53:26,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:53:26,697 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:53:26,698 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:53:26,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141474266] [2024-11-28 04:53:26,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141474266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:26,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:26,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:53:26,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273331130] [2024-11-28 04:53:26,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:26,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:53:26,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:53:26,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:53:26,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:53:26,699 INFO L87 Difference]: Start difference. First operand 526 states and 733 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:26,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:26,781 INFO L93 Difference]: Finished difference Result 1035 states and 1445 transitions. [2024-11-28 04:53:26,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:53:26,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 116 [2024-11-28 04:53:26,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:26,785 INFO L225 Difference]: With dead ends: 1035 [2024-11-28 04:53:26,786 INFO L226 Difference]: Without dead ends: 526 [2024-11-28 04:53:26,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:53:26,788 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 0 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 371 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 [2024-11-28 04:53:26,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 371 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:53:26,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-11-28 04:53:26,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-11-28 04:53:26,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 421 states have (on average 1.3016627078384797) internal successors, (548), 427 states have internal predecessors, (548), 90 states have call successors, (90), 14 states have call predecessors, (90), 14 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-28 04:53:26,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 728 transitions. [2024-11-28 04:53:26,835 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 728 transitions. Word has length 116 [2024-11-28 04:53:26,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:26,836 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 728 transitions. [2024-11-28 04:53:26,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:26,836 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 728 transitions. [2024-11-28 04:53:26,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-28 04:53:26,838 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:26,838 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:26,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-11-28 04:53:27,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:27,039 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:27,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:27,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1962457377, now seen corresponding path program 1 times [2024-11-28 04:53:27,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:53:27,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700091791] [2024-11-28 04:53:27,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:27,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:27,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:53:27,044 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:53:27,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-28 04:53:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:27,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:53:27,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:28,034 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 21 treesize of output 17 [2024-11-28 04:53:28,170 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 66 treesize of output 54 [2024-11-28 04:53:28,178 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 70 treesize of output 50 [2024-11-28 04:53:28,240 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 3 proven. 169 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-28 04:53:28,240 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:28,458 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:53:28,458 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:53:28,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700091791] [2024-11-28 04:53:28,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700091791] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:28,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:53:28,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 13 [2024-11-28 04:53:28,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026536797] [2024-11-28 04:53:28,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:28,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:53:28,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:53:28,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:53:28,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:53:28,459 INFO L87 Difference]: Start difference. First operand 526 states and 728 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:28,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:28,753 INFO L93 Difference]: Finished difference Result 1428 states and 1968 transitions. [2024-11-28 04:53:28,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:53:28,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2024-11-28 04:53:28,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:28,771 INFO L225 Difference]: With dead ends: 1428 [2024-11-28 04:53:28,771 INFO L226 Difference]: Without dead ends: 924 [2024-11-28 04:53:28,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:53:28,773 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 82 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:28,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 768 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:53:28,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2024-11-28 04:53:28,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 918. [2024-11-28 04:53:28,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 729 states have (on average 1.2784636488340193) internal successors, (932), 743 states have internal predecessors, (932), 162 states have call successors, (162), 26 states have call predecessors, (162), 26 states have return successors, (162), 148 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-28 04:53:28,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1256 transitions. [2024-11-28 04:53:28,860 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1256 transitions. Word has length 118 [2024-11-28 04:53:28,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:28,861 INFO L471 AbstractCegarLoop]: Abstraction has 918 states and 1256 transitions. [2024-11-28 04:53:28,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:28,861 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1256 transitions. [2024-11-28 04:53:28,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-28 04:53:28,863 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:28,863 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:28,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-11-28 04:53:29,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:29,064 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:29,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:29,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1153110751, now seen corresponding path program 1 times [2024-11-28 04:53:29,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:53:29,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557551355] [2024-11-28 04:53:29,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:29,067 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:29,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:53:29,069 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:53:29,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-28 04:53:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:29,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 04:53:29,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:30,064 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 40 treesize of output 32 [2024-11-28 04:53:30,069 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 60 treesize of output 32 [2024-11-28 04:53:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-28 04:53:30,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:53:30,385 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:53:30,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557551355] [2024-11-28 04:53:30,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557551355] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:30,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:53:30,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-28 04:53:30,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408910602] [2024-11-28 04:53:30,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:30,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:53:30,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:53:30,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:53:30,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:53:30,387 INFO L87 Difference]: Start difference. First operand 918 states and 1256 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:30,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:30,794 INFO L93 Difference]: Finished difference Result 1830 states and 2498 transitions. [2024-11-28 04:53:30,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:53:30,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2024-11-28 04:53:30,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:30,801 INFO L225 Difference]: With dead ends: 1830 [2024-11-28 04:53:30,801 INFO L226 Difference]: Without dead ends: 934 [2024-11-28 04:53:30,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:53:30,804 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 106 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:30,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 332 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:53:30,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2024-11-28 04:53:30,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 930. [2024-11-28 04:53:30,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 737 states have (on average 1.2700135685210312) internal successors, (936), 751 states have internal predecessors, (936), 162 states have call successors, (162), 30 states have call predecessors, (162), 30 states have return successors, (162), 148 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-28 04:53:30,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1260 transitions. [2024-11-28 04:53:30,894 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1260 transitions. Word has length 118 [2024-11-28 04:53:30,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:30,895 INFO L471 AbstractCegarLoop]: Abstraction has 930 states and 1260 transitions. [2024-11-28 04:53:30,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:30,895 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1260 transitions. [2024-11-28 04:53:30,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-28 04:53:30,897 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:30,897 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:30,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-11-28 04:53:31,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:31,101 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:31,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:31,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1713730350, now seen corresponding path program 1 times [2024-11-28 04:53:31,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:53:31,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757349126] [2024-11-28 04:53:31,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:31,103 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:31,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:53:31,105 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:53:31,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-11-28 04:53:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:31,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:53:31,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:31,912 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 18 treesize of output 10 [2024-11-28 04:53:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 8 proven. 204 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-28 04:53:31,946 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:32,225 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-28 04:53:32,226 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 20 treesize of output 19 [2024-11-28 04:53:32,380 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-28 04:53:32,381 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:53:32,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757349126] [2024-11-28 04:53:32,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757349126] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:53:32,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:53:32,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2024-11-28 04:53:32,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711813705] [2024-11-28 04:53:32,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:53:32,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:53:32,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:53:32,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:53:32,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:53:32,382 INFO L87 Difference]: Start difference. First operand 930 states and 1260 transitions. Second operand has 12 states, 10 states have (on average 6.6) internal successors, (66), 12 states have internal predecessors, (66), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-28 04:53:33,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:33,167 INFO L93 Difference]: Finished difference Result 1966 states and 2607 transitions. [2024-11-28 04:53:33,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:53:33,168 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.6) internal successors, (66), 12 states have internal predecessors, (66), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 118 [2024-11-28 04:53:33,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:33,174 INFO L225 Difference]: With dead ends: 1966 [2024-11-28 04:53:33,174 INFO L226 Difference]: Without dead ends: 1058 [2024-11-28 04:53:33,176 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:53:33,177 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 302 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:33,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 474 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:53:33,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2024-11-28 04:53:33,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 994. [2024-11-28 04:53:33,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 785 states have (on average 1.243312101910828) internal successors, (976), 799 states have internal predecessors, (976), 162 states have call successors, (162), 46 states have call predecessors, (162), 46 states have return successors, (162), 148 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-28 04:53:33,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1300 transitions. [2024-11-28 04:53:33,297 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1300 transitions. Word has length 118 [2024-11-28 04:53:33,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:33,297 INFO L471 AbstractCegarLoop]: Abstraction has 994 states and 1300 transitions. [2024-11-28 04:53:33,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.6) internal successors, (66), 12 states have internal predecessors, (66), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-28 04:53:33,298 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1300 transitions. [2024-11-28 04:53:33,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-28 04:53:33,300 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:33,300 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:33,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-11-28 04:53:33,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:33,500 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:33,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:33,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1126924336, now seen corresponding path program 1 times [2024-11-28 04:53:33,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:53:33,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261834670] [2024-11-28 04:53:33,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:33,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:33,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:53:33,503 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:53:33,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-28 04:53:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:33,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:53:33,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:33,926 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:53:33,926 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 95 treesize of output 35 [2024-11-28 04:53:37,979 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_18 (_ BitVec 32)) (v_arrayElimCell_19 (_ BitVec 32))) (let ((.cse0 (let ((.cse1 (concat v_arrayElimCell_18 v_arrayElimCell_19))) (fp ((_ extract 63 63) .cse1) ((_ extract 62 52) .cse1) ((_ extract 51 0) .cse1))))) (and (= |c_ULTIMATE.start_property_#t~mem57#1| .cse0) (not (fp.geq (fp.neg .cse0) ((_ to_fp 11 53) c_currentRoundingMode (/ 67.0 4.0))))))) is different from true [2024-11-28 04:53:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:53:37,980 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:53:37,980 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:53:37,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261834670] [2024-11-28 04:53:37,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261834670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:37,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:37,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:53:37,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124516957] [2024-11-28 04:53:37,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:37,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:53:37,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:53:37,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:53:37,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2024-11-28 04:53:37,982 INFO L87 Difference]: Start difference. First operand 994 states and 1300 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:38,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:38,722 INFO L93 Difference]: Finished difference Result 2160 states and 2818 transitions. [2024-11-28 04:53:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:53:38,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2024-11-28 04:53:38,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:38,729 INFO L225 Difference]: With dead ends: 2160 [2024-11-28 04:53:38,729 INFO L226 Difference]: Without dead ends: 1188 [2024-11-28 04:53:38,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2024-11-28 04:53:38,732 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 32 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:38,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 352 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 161 Unchecked, 0.2s Time] [2024-11-28 04:53:38,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2024-11-28 04:53:38,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1026. [2024-11-28 04:53:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 817 states have (on average 1.241126070991432) internal successors, (1014), 831 states have internal predecessors, (1014), 162 states have call successors, (162), 46 states have call predecessors, (162), 46 states have return successors, (162), 148 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-28 04:53:38,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1338 transitions. [2024-11-28 04:53:38,876 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1338 transitions. Word has length 118 [2024-11-28 04:53:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:38,876 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1338 transitions. [2024-11-28 04:53:38,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:38,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1338 transitions. [2024-11-28 04:53:38,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-28 04:53:38,879 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:38,879 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:38,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2024-11-28 04:53:39,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:39,080 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:39,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:39,080 INFO L85 PathProgramCache]: Analyzing trace with hash -201742235, now seen corresponding path program 1 times [2024-11-28 04:53:39,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:53:39,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51832606] [2024-11-28 04:53:39,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:39,081 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 [2024-11-28 04:53:39,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:53:39,082 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:53:39,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-28 04:53:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:39,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:53:39,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:39,890 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 17 [2024-11-28 04:53:39,903 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 18 treesize of output 10 [2024-11-28 04:53:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:53:39,947 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:53:39,947 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:53:39,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51832606] [2024-11-28 04:53:39,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51832606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:39,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:39,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:53:39,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38052970] [2024-11-28 04:53:39,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:39,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:53:39,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:53:39,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:53:39,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:53:39,949 INFO L87 Difference]: Start difference. First operand 1026 states and 1338 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:40,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:40,675 INFO L93 Difference]: Finished difference Result 2041 states and 2658 transitions. [2024-11-28 04:53:40,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:53:40,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2024-11-28 04:53:40,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:40,681 INFO L225 Difference]: With dead ends: 2041 [2024-11-28 04:53:40,681 INFO L226 Difference]: Without dead ends: 1028 [2024-11-28 04:53:40,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:53:40,684 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 120 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:40,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 600 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:53:40,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2024-11-28 04:53:40,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 999. [2024-11-28 04:53:40,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 792 states have (on average 1.2373737373737375) internal successors, (980), 804 states have internal predecessors, (980), 160 states have call successors, (160), 46 states have call predecessors, (160), 46 states have return successors, (160), 148 states have call predecessors, (160), 160 states have call successors, (160) [2024-11-28 04:53:40,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1300 transitions. [2024-11-28 04:53:40,813 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1300 transitions. Word has length 118 [2024-11-28 04:53:40,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:40,813 INFO L471 AbstractCegarLoop]: Abstraction has 999 states and 1300 transitions. [2024-11-28 04:53:40,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:40,814 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1300 transitions. [2024-11-28 04:53:40,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-28 04:53:40,816 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:40,816 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:40,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-11-28 04:53:41,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:41,017 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:41,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:41,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1011088861, now seen corresponding path program 1 times [2024-11-28 04:53:41,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:53:41,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583285752] [2024-11-28 04:53:41,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:41,018 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:41,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:53:41,020 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:53:41,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-11-28 04:53:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:41,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:53:41,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:41,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-28 04:53:41,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2024-11-28 04:53:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:53:41,561 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:53:41,561 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:53:41,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583285752] [2024-11-28 04:53:41,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583285752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:41,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:41,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:53:41,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134876062] [2024-11-28 04:53:41,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:41,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:53:41,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:53:41,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:53:41,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:53:41,562 INFO L87 Difference]: Start difference. First operand 999 states and 1300 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:41,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:41,839 INFO L93 Difference]: Finished difference Result 2217 states and 2901 transitions. [2024-11-28 04:53:41,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:53:41,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2024-11-28 04:53:41,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:41,846 INFO L225 Difference]: With dead ends: 2217 [2024-11-28 04:53:41,846 INFO L226 Difference]: Without dead ends: 1221 [2024-11-28 04:53:41,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:53:41,849 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 115 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:41,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1026 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:53:41,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2024-11-28 04:53:41,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1129. [2024-11-28 04:53:41,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 876 states have (on average 1.2180365296803652) internal successors, (1067), 890 states have internal predecessors, (1067), 196 states have call successors, (196), 56 states have call predecessors, (196), 56 states have return successors, (196), 182 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-28 04:53:42,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1459 transitions. [2024-11-28 04:53:42,003 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1459 transitions. Word has length 118 [2024-11-28 04:53:42,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:42,004 INFO L471 AbstractCegarLoop]: Abstraction has 1129 states and 1459 transitions. [2024-11-28 04:53:42,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:42,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1459 transitions. [2024-11-28 04:53:42,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-28 04:53:42,007 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:42,007 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:42,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-11-28 04:53:42,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:42,212 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:42,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:42,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1531924699, now seen corresponding path program 1 times [2024-11-28 04:53:42,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:53:42,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733559456] [2024-11-28 04:53:42,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:42,214 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:42,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:53:42,216 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:53:42,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-11-28 04:53:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:42,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:53:42,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:44,290 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 51 treesize of output 39 [2024-11-28 04:53:44,297 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 61 treesize of output 33 [2024-11-28 04:53:44,394 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 10 proven. 162 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-28 04:53:44,394 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:44,763 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:53:44,763 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:53:44,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733559456] [2024-11-28 04:53:44,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733559456] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:44,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:53:44,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2024-11-28 04:53:44,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884259507] [2024-11-28 04:53:44,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:44,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:53:44,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:53:44,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:53:44,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:53:44,765 INFO L87 Difference]: Start difference. First operand 1129 states and 1459 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:45,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:45,255 INFO L93 Difference]: Finished difference Result 2191 states and 2831 transitions. [2024-11-28 04:53:45,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:53:45,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2024-11-28 04:53:45,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:45,260 INFO L225 Difference]: With dead ends: 2191 [2024-11-28 04:53:45,260 INFO L226 Difference]: Without dead ends: 1136 [2024-11-28 04:53:45,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:53:45,263 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 51 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:45,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 541 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:53:45,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2024-11-28 04:53:45,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1134. [2024-11-28 04:53:45,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 879 states have (on average 1.2138794084186575) internal successors, (1067), 893 states have internal predecessors, (1067), 196 states have call successors, (196), 58 states have call predecessors, (196), 58 states have return successors, (196), 182 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-28 04:53:45,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1459 transitions. [2024-11-28 04:53:45,412 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1459 transitions. Word has length 118 [2024-11-28 04:53:45,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:45,413 INFO L471 AbstractCegarLoop]: Abstraction has 1134 states and 1459 transitions. [2024-11-28 04:53:45,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:53:45,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1459 transitions. [2024-11-28 04:53:45,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-28 04:53:45,415 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:45,416 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:45,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-11-28 04:53:45,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:45,616 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:45,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:45,617 INFO L85 PathProgramCache]: Analyzing trace with hash -702306914, now seen corresponding path program 1 times [2024-11-28 04:53:45,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:53:45,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261818299] [2024-11-28 04:53:45,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:45,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:53:45,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:53:45,619 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:53:45,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-28 04:53:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:45,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:53:45,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:48,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:53:48,417 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 144 treesize of output 54 [2024-11-28 04:53:48,510 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 13 proven. 39 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-28 04:53:48,510 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:49,678 INFO L349 Elim1Store]: treesize reduction 15, result has 69.4 percent of original size [2024-11-28 04:53:49,678 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 150 treesize of output 93 [2024-11-28 04:53:57,114 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-28 04:53:57,114 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:53:57,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261818299] [2024-11-28 04:53:57,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261818299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:53:57,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:53:57,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2024-11-28 04:53:57,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327179008] [2024-11-28 04:53:57,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:53:57,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:53:57,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:53:57,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:53:57,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=276, Unknown=1, NotChecked=0, Total=342 [2024-11-28 04:53:57,116 INFO L87 Difference]: Start difference. First operand 1134 states and 1459 transitions. Second operand has 19 states, 17 states have (on average 5.294117647058823) internal successors, (90), 18 states have internal predecessors, (90), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-28 04:54:02,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:02,105 INFO L93 Difference]: Finished difference Result 2859 states and 3587 transitions. [2024-11-28 04:54:02,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:54:02,106 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.294117647058823) internal successors, (90), 18 states have internal predecessors, (90), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 118 [2024-11-28 04:54:02,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:02,115 INFO L225 Difference]: With dead ends: 2859 [2024-11-28 04:54:02,115 INFO L226 Difference]: Without dead ends: 1799 [2024-11-28 04:54:02,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=281, Invalid=908, Unknown=1, NotChecked=0, Total=1190 [2024-11-28 04:54:02,118 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 407 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:02,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1514 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 04:54:02,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2024-11-28 04:54:02,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1057. [2024-11-28 04:54:02,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 802 states have (on average 1.1820448877805487) internal successors, (948), 816 states have internal predecessors, (948), 196 states have call successors, (196), 58 states have call predecessors, (196), 58 states have return successors, (196), 182 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-28 04:54:02,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1340 transitions. [2024-11-28 04:54:02,293 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1340 transitions. Word has length 118 [2024-11-28 04:54:02,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:02,295 INFO L471 AbstractCegarLoop]: Abstraction has 1057 states and 1340 transitions. [2024-11-28 04:54:02,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.294117647058823) internal successors, (90), 18 states have internal predecessors, (90), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-28 04:54:02,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1340 transitions. [2024-11-28 04:54:02,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-28 04:54:02,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:02,297 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:02,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-11-28 04:54:02,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:02,498 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:02,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:02,499 INFO L85 PathProgramCache]: Analyzing trace with hash 571776665, now seen corresponding path program 1 times [2024-11-28 04:54:02,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:54:02,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435275865] [2024-11-28 04:54:02,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:02,500 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:02,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:54:02,502 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:54:02,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-11-28 04:54:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:02,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:54:02,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:03,431 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 18 treesize of output 10 [2024-11-28 04:54:03,492 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 8 proven. 204 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-28 04:54:03,492 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:03,932 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-28 04:54:03,932 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 20 treesize of output 19 [2024-11-28 04:54:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-28 04:54:04,113 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:54:04,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435275865] [2024-11-28 04:54:04,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435275865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:54:04,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:54:04,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2024-11-28 04:54:04,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953924642] [2024-11-28 04:54:04,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:54:04,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:54:04,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:54:04,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:54:04,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:54:04,115 INFO L87 Difference]: Start difference. First operand 1057 states and 1340 transitions. Second operand has 12 states, 10 states have (on average 6.8) internal successors, (68), 12 states have internal predecessors, (68), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-28 04:54:04,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:04,961 INFO L93 Difference]: Finished difference Result 2112 states and 2661 transitions. [2024-11-28 04:54:04,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:54:04,962 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.8) internal successors, (68), 12 states have internal predecessors, (68), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 120 [2024-11-28 04:54:04,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:04,969 INFO L225 Difference]: With dead ends: 2112 [2024-11-28 04:54:04,969 INFO L226 Difference]: Without dead ends: 1129 [2024-11-28 04:54:04,971 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:54:04,972 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 162 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:04,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 471 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:54:04,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2024-11-28 04:54:05,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1057. [2024-11-28 04:54:05,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 802 states have (on average 1.1783042394014962) internal successors, (945), 816 states have internal predecessors, (945), 196 states have call successors, (196), 58 states have call predecessors, (196), 58 states have return successors, (196), 182 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-28 04:54:05,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1337 transitions. [2024-11-28 04:54:05,154 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1337 transitions. Word has length 120 [2024-11-28 04:54:05,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:05,154 INFO L471 AbstractCegarLoop]: Abstraction has 1057 states and 1337 transitions. [2024-11-28 04:54:05,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.8) internal successors, (68), 12 states have internal predecessors, (68), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-28 04:54:05,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1337 transitions. [2024-11-28 04:54:05,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-28 04:54:05,156 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:05,156 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:05,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-28 04:54:05,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:05,357 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:05,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:05,357 INFO L85 PathProgramCache]: Analyzing trace with hash 994478491, now seen corresponding path program 1 times [2024-11-28 04:54:05,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:54:05,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334188253] [2024-11-28 04:54:05,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:05,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:05,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:54:05,363 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:54:05,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-11-28 04:54:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:05,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:54:05,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:06,386 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 17 treesize of output 13 [2024-11-28 04:54:06,497 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 54 treesize of output 42 [2024-11-28 04:54:06,501 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 54 treesize of output 34 [2024-11-28 04:54:06,620 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 214 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-28 04:54:06,620 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:06,939 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:54:06,940 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:54:06,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334188253] [2024-11-28 04:54:06,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334188253] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:54:06,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:54:06,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 16 [2024-11-28 04:54:06,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498337734] [2024-11-28 04:54:06,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:54:06,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:54:06,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:54:06,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:54:06,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:54:06,941 INFO L87 Difference]: Start difference. First operand 1057 states and 1337 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:54:07,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:07,481 INFO L93 Difference]: Finished difference Result 2794 states and 3502 transitions. [2024-11-28 04:54:07,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:54:07,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 120 [2024-11-28 04:54:07,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:07,489 INFO L225 Difference]: With dead ends: 2794 [2024-11-28 04:54:07,489 INFO L226 Difference]: Without dead ends: 1806 [2024-11-28 04:54:07,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:54:07,492 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 74 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:07,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 982 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:54:07,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2024-11-28 04:54:07,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1660. [2024-11-28 04:54:07,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1660 states, 1309 states have (on average 1.1932773109243697) internal successors, (1562), 1339 states have internal predecessors, (1562), 260 states have call successors, (260), 90 states have call predecessors, (260), 90 states have return successors, (260), 230 states have call predecessors, (260), 260 states have call successors, (260) [2024-11-28 04:54:07,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2082 transitions. [2024-11-28 04:54:07,742 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2082 transitions. Word has length 120 [2024-11-28 04:54:07,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:07,743 INFO L471 AbstractCegarLoop]: Abstraction has 1660 states and 2082 transitions. [2024-11-28 04:54:07,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:54:07,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2082 transitions. [2024-11-28 04:54:07,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-28 04:54:07,745 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:07,745 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:07,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2024-11-28 04:54:07,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:07,946 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:07,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:07,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2092413767, now seen corresponding path program 1 times [2024-11-28 04:54:07,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:54:07,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395263945] [2024-11-28 04:54:07,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:07,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:07,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:54:07,950 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:54:07,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-11-28 04:54:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:08,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:54:08,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:08,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-28 04:54:09,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2024-11-28 04:54:09,058 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 44 treesize of output 32 [2024-11-28 04:54:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 214 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-28 04:54:09,198 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:09,829 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-28 04:54:09,829 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 20 treesize of output 19 [2024-11-28 04:54:10,039 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-28 04:54:10,039 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:54:10,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395263945] [2024-11-28 04:54:10,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395263945] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:54:10,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:54:10,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2024-11-28 04:54:10,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468092740] [2024-11-28 04:54:10,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:54:10,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:54:10,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:54:10,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:54:10,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:54:10,042 INFO L87 Difference]: Start difference. First operand 1660 states and 2082 transitions. Second operand has 19 states, 17 states have (on average 4.588235294117647) internal successors, (78), 19 states have internal predecessors, (78), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-28 04:54:12,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:12,357 INFO L93 Difference]: Finished difference Result 4276 states and 5250 transitions. [2024-11-28 04:54:12,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:54:12,357 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.588235294117647) internal successors, (78), 19 states have internal predecessors, (78), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 120 [2024-11-28 04:54:12,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:12,368 INFO L225 Difference]: With dead ends: 4276 [2024-11-28 04:54:12,368 INFO L226 Difference]: Without dead ends: 2685 [2024-11-28 04:54:12,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:54:12,372 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 319 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:12,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 1487 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 04:54:12,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2024-11-28 04:54:12,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 1115. [2024-11-28 04:54:12,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 890 states have (on average 1.1943820224719102) internal successors, (1063), 904 states have internal predecessors, (1063), 164 states have call successors, (164), 60 states have call predecessors, (164), 60 states have return successors, (164), 150 states have call predecessors, (164), 164 states have call successors, (164) [2024-11-28 04:54:12,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1391 transitions. [2024-11-28 04:54:12,606 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1391 transitions. Word has length 120 [2024-11-28 04:54:12,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:12,607 INFO L471 AbstractCegarLoop]: Abstraction has 1115 states and 1391 transitions. [2024-11-28 04:54:12,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.588235294117647) internal successors, (78), 19 states have internal predecessors, (78), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-28 04:54:12,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1391 transitions. [2024-11-28 04:54:12,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-28 04:54:12,610 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:12,610 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:12,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2024-11-28 04:54:12,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:12,811 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:12,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:12,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1061722989, now seen corresponding path program 1 times [2024-11-28 04:54:12,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:54:12,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736426374] [2024-11-28 04:54:12,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:12,812 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:12,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:54:12,813 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:54:12,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-11-28 04:54:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:13,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:54:13,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:13,192 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:54:13,193 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:54:13,193 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:54:13,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736426374] [2024-11-28 04:54:13,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736426374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:54:13,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:54:13,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:54:13,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26479480] [2024-11-28 04:54:13,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:54:13,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:54:13,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:54:13,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:54:13,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:54:13,194 INFO L87 Difference]: Start difference. First operand 1115 states and 1391 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:54:13,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:13,383 INFO L93 Difference]: Finished difference Result 1149 states and 1432 transitions. [2024-11-28 04:54:13,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:54:13,383 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 120 [2024-11-28 04:54:13,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:13,389 INFO L225 Difference]: With dead ends: 1149 [2024-11-28 04:54:13,389 INFO L226 Difference]: Without dead ends: 1147 [2024-11-28 04:54:13,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:54:13,390 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 0 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:13,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 600 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:54:13,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2024-11-28 04:54:13,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2024-11-28 04:54:13,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 922 states have (on average 1.1876355748373102) internal successors, (1095), 936 states have internal predecessors, (1095), 164 states have call successors, (164), 60 states have call predecessors, (164), 60 states have return successors, (164), 150 states have call predecessors, (164), 164 states have call successors, (164) [2024-11-28 04:54:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1423 transitions. [2024-11-28 04:54:13,634 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1423 transitions. Word has length 120 [2024-11-28 04:54:13,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:13,635 INFO L471 AbstractCegarLoop]: Abstraction has 1147 states and 1423 transitions. [2024-11-28 04:54:13,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:54:13,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1423 transitions. [2024-11-28 04:54:13,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-28 04:54:13,636 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:13,637 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:13,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2024-11-28 04:54:13,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:13,837 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:13,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:13,838 INFO L85 PathProgramCache]: Analyzing trace with hash -124434805, now seen corresponding path program 1 times [2024-11-28 04:54:13,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:54:13,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516867824] [2024-11-28 04:54:13,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:13,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:13,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:54:13,840 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:54:13,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2024-11-28 04:54:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:14,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:54:14,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:14,755 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 27 treesize of output 19 [2024-11-28 04:54:14,759 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 13 treesize of output 9 [2024-11-28 04:54:14,879 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 38 treesize of output 26 [2024-11-28 04:54:15,000 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 214 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-28 04:54:15,000 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:15,651 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-28 04:54:15,651 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 20 treesize of output 19 [2024-11-28 04:54:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-28 04:54:15,860 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:54:15,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516867824] [2024-11-28 04:54:15,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516867824] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:54:15,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:54:15,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2024-11-28 04:54:15,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650901024] [2024-11-28 04:54:15,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:54:15,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:54:15,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:54:15,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:54:15,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:54:15,862 INFO L87 Difference]: Start difference. First operand 1147 states and 1423 transitions. Second operand has 19 states, 17 states have (on average 4.705882352941177) internal successors, (80), 19 states have internal predecessors, (80), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-28 04:54:18,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:18,898 INFO L93 Difference]: Finished difference Result 2975 states and 3659 transitions. [2024-11-28 04:54:18,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 04:54:18,902 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.705882352941177) internal successors, (80), 19 states have internal predecessors, (80), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 121 [2024-11-28 04:54:18,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:18,907 INFO L225 Difference]: With dead ends: 2975 [2024-11-28 04:54:18,908 INFO L226 Difference]: Without dead ends: 1906 [2024-11-28 04:54:18,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=311, Invalid=1411, Unknown=0, NotChecked=0, Total=1722 [2024-11-28 04:54:18,912 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 461 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:18,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1636 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 04:54:18,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2024-11-28 04:54:19,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1581. [2024-11-28 04:54:19,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1248 states have (on average 1.1746794871794872) internal successors, (1466), 1268 states have internal predecessors, (1466), 240 states have call successors, (240), 92 states have call predecessors, (240), 92 states have return successors, (240), 220 states have call predecessors, (240), 240 states have call successors, (240) [2024-11-28 04:54:19,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 1946 transitions. [2024-11-28 04:54:19,204 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 1946 transitions. Word has length 121 [2024-11-28 04:54:19,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:19,205 INFO L471 AbstractCegarLoop]: Abstraction has 1581 states and 1946 transitions. [2024-11-28 04:54:19,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.705882352941177) internal successors, (80), 19 states have internal predecessors, (80), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-28 04:54:19,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 1946 transitions. [2024-11-28 04:54:19,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-28 04:54:19,207 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:19,207 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:19,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2024-11-28 04:54:19,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:19,408 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:19,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:19,409 INFO L85 PathProgramCache]: Analyzing trace with hash -228633441, now seen corresponding path program 1 times [2024-11-28 04:54:19,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:54:19,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144429209] [2024-11-28 04:54:19,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:19,409 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:19,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:54:19,411 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:54:19,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2024-11-28 04:54:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:19,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:54:19,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:20,312 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 21 [2024-11-28 04:54:20,337 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 8 proven. 204 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-28 04:54:20,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:20,675 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-28 04:54:20,675 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 20 treesize of output 19 [2024-11-28 04:54:20,832 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-28 04:54:20,833 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:54:20,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144429209] [2024-11-28 04:54:20,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144429209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:54:20,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:54:20,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2024-11-28 04:54:20,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417156221] [2024-11-28 04:54:20,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:54:20,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:54:20,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:54:20,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:54:20,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:54:20,834 INFO L87 Difference]: Start difference. First operand 1581 states and 1946 transitions. Second operand has 11 states, 9 states have (on average 7.555555555555555) internal successors, (68), 11 states have internal predecessors, (68), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-28 04:54:21,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:21,711 INFO L93 Difference]: Finished difference Result 3271 states and 4001 transitions. [2024-11-28 04:54:21,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:54:21,712 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.555555555555555) internal successors, (68), 11 states have internal predecessors, (68), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 122 [2024-11-28 04:54:21,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:21,721 INFO L225 Difference]: With dead ends: 3271 [2024-11-28 04:54:21,721 INFO L226 Difference]: Without dead ends: 1693 [2024-11-28 04:54:21,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:54:21,725 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 309 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:21,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 464 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:54:21,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2024-11-28 04:54:22,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1581. [2024-11-28 04:54:22,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1248 states have (on average 1.172275641025641) internal successors, (1463), 1268 states have internal predecessors, (1463), 240 states have call successors, (240), 92 states have call predecessors, (240), 92 states have return successors, (240), 220 states have call predecessors, (240), 240 states have call successors, (240) [2024-11-28 04:54:22,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 1943 transitions. [2024-11-28 04:54:22,059 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 1943 transitions. Word has length 122 [2024-11-28 04:54:22,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:22,059 INFO L471 AbstractCegarLoop]: Abstraction has 1581 states and 1943 transitions. [2024-11-28 04:54:22,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.555555555555555) internal successors, (68), 11 states have internal predecessors, (68), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-28 04:54:22,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 1943 transitions. [2024-11-28 04:54:22,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-28 04:54:22,061 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:22,062 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:22,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2024-11-28 04:54:22,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:22,262 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:22,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:22,263 INFO L85 PathProgramCache]: Analyzing trace with hash -9778723, now seen corresponding path program 1 times [2024-11-28 04:54:22,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:54:22,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422799] [2024-11-28 04:54:22,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:22,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:22,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:54:22,265 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:54:22,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2024-11-28 04:54:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:22,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:54:22,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:23,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-28 04:54:23,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2024-11-28 04:54:23,523 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 44 treesize of output 32 [2024-11-28 04:54:23,654 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 214 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-28 04:54:23,654 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:24,588 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-28 04:54:24,588 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 31 treesize of output 26 [2024-11-28 04:54:24,820 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-28 04:54:24,820 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:54:24,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422799] [2024-11-28 04:54:24,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:54:24,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:54:24,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2024-11-28 04:54:24,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084759835] [2024-11-28 04:54:24,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:54:24,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 04:54:24,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:54:24,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 04:54:24,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:54:24,822 INFO L87 Difference]: Start difference. First operand 1581 states and 1943 transitions. Second operand has 22 states, 20 states have (on average 4.8) internal successors, (96), 22 states have internal predecessors, (96), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-28 04:54:27,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:27,297 INFO L93 Difference]: Finished difference Result 3912 states and 4732 transitions. [2024-11-28 04:54:27,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 04:54:27,299 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 4.8) internal successors, (96), 22 states have internal predecessors, (96), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 5 states have call successors, (28) Word has length 122 [2024-11-28 04:54:27,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:27,310 INFO L225 Difference]: With dead ends: 3912 [2024-11-28 04:54:27,310 INFO L226 Difference]: Without dead ends: 2329 [2024-11-28 04:54:27,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=283, Invalid=1277, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 04:54:27,314 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 329 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:27,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 1501 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 04:54:27,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2024-11-28 04:54:27,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 1591. [2024-11-28 04:54:27,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1258 states have (on average 1.1645468998410176) internal successors, (1465), 1278 states have internal predecessors, (1465), 240 states have call successors, (240), 92 states have call predecessors, (240), 92 states have return successors, (240), 220 states have call predecessors, (240), 240 states have call successors, (240) [2024-11-28 04:54:27,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 1945 transitions. [2024-11-28 04:54:27,655 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 1945 transitions. Word has length 122 [2024-11-28 04:54:27,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:27,655 INFO L471 AbstractCegarLoop]: Abstraction has 1591 states and 1945 transitions. [2024-11-28 04:54:27,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 4.8) internal successors, (96), 22 states have internal predecessors, (96), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-28 04:54:27,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 1945 transitions. [2024-11-28 04:54:27,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-28 04:54:27,657 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:27,657 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:27,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -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 [2024-11-28 04:54:27,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:27,858 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:27,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:27,859 INFO L85 PathProgramCache]: Analyzing trace with hash 341217400, now seen corresponding path program 1 times [2024-11-28 04:54:27,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:54:27,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250583286] [2024-11-28 04:54:27,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:27,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:27,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:54:27,863 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:54:27,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2024-11-28 04:54:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:28,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:54:28,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:28,388 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 17 treesize of output 9 [2024-11-28 04:54:30,817 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 28 treesize of output 20 [2024-11-28 04:54:30,822 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 24 treesize of output 16 [2024-11-28 04:54:31,283 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-28 04:54:31,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:35,088 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:54:35,088 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:54:35,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250583286] [2024-11-28 04:54:35,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250583286] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:54:35,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:54:35,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2024-11-28 04:54:35,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581418712] [2024-11-28 04:54:35,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:54:35,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:54:35,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:54:35,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:54:35,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:54:35,090 INFO L87 Difference]: Start difference. First operand 1591 states and 1945 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:54:38,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:38,321 INFO L93 Difference]: Finished difference Result 3783 states and 4637 transitions. [2024-11-28 04:54:38,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:54:38,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 122 [2024-11-28 04:54:38,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:38,336 INFO L225 Difference]: With dead ends: 3783 [2024-11-28 04:54:38,336 INFO L226 Difference]: Without dead ends: 2195 [2024-11-28 04:54:38,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:54:38,340 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 39 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:38,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 412 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-28 04:54:38,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2024-11-28 04:54:38,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 2097. [2024-11-28 04:54:38,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 1764 states have (on average 1.189342403628118) internal successors, (2098), 1784 states have internal predecessors, (2098), 240 states have call successors, (240), 92 states have call predecessors, (240), 92 states have return successors, (240), 220 states have call predecessors, (240), 240 states have call successors, (240) [2024-11-28 04:54:38,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 2578 transitions. [2024-11-28 04:54:38,670 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 2578 transitions. Word has length 122 [2024-11-28 04:54:38,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:38,670 INFO L471 AbstractCegarLoop]: Abstraction has 2097 states and 2578 transitions. [2024-11-28 04:54:38,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:54:38,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 2578 transitions. [2024-11-28 04:54:38,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-28 04:54:38,673 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:38,673 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:38,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2024-11-28 04:54:38,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:38,874 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:38,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:38,874 INFO L85 PathProgramCache]: Analyzing trace with hash -717464625, now seen corresponding path program 1 times [2024-11-28 04:54:38,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:54:38,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4555800] [2024-11-28 04:54:38,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:38,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:38,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:54:38,876 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:54:38,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2024-11-28 04:54:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:39,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 04:54:39,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:40,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2024-11-28 04:54:40,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2024-11-28 04:54:40,223 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 43 treesize of output 27 [2024-11-28 04:54:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 214 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-28 04:54:40,473 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:41,883 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-28 04:54:41,883 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 30 treesize of output 25 [2024-11-28 04:54:42,153 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-28 04:54:42,153 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:54:42,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4555800] [2024-11-28 04:54:42,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4555800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:54:42,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:54:42,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2024-11-28 04:54:42,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966340022] [2024-11-28 04:54:42,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:54:42,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 04:54:42,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:54:42,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 04:54:42,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:54:42,155 INFO L87 Difference]: Start difference. First operand 2097 states and 2578 transitions. Second operand has 24 states, 22 states have (on average 4.454545454545454) internal successors, (98), 24 states have internal predecessors, (98), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-28 04:54:45,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:45,869 INFO L93 Difference]: Finished difference Result 4492 states and 5476 transitions. [2024-11-28 04:54:45,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:54:45,870 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 4.454545454545454) internal successors, (98), 24 states have internal predecessors, (98), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 5 states have call successors, (28) Word has length 123 [2024-11-28 04:54:45,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:45,879 INFO L225 Difference]: With dead ends: 4492 [2024-11-28 04:54:45,880 INFO L226 Difference]: Without dead ends: 2388 [2024-11-28 04:54:45,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=304, Invalid=1502, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 04:54:45,883 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 467 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:45,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 1961 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 04:54:45,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2024-11-28 04:54:46,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2111. [2024-11-28 04:54:46,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 1778 states have (on average 1.186726659167604) internal successors, (2110), 1798 states have internal predecessors, (2110), 240 states have call successors, (240), 92 states have call predecessors, (240), 92 states have return successors, (240), 220 states have call predecessors, (240), 240 states have call successors, (240) [2024-11-28 04:54:46,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 2590 transitions. [2024-11-28 04:54:46,116 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 2590 transitions. Word has length 123 [2024-11-28 04:54:46,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:46,116 INFO L471 AbstractCegarLoop]: Abstraction has 2111 states and 2590 transitions. [2024-11-28 04:54:46,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 4.454545454545454) internal successors, (98), 24 states have internal predecessors, (98), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-28 04:54:46,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 2590 transitions. [2024-11-28 04:54:46,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-28 04:54:46,118 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:46,118 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:46,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2024-11-28 04:54:46,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:46,319 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:46,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:46,319 INFO L85 PathProgramCache]: Analyzing trace with hash 293652625, now seen corresponding path program 1 times [2024-11-28 04:54:46,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:54:46,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147954445] [2024-11-28 04:54:46,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:46,320 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:46,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:54:46,322 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:54:46,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2024-11-28 04:54:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:46,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:54:46,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:47,472 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 21 [2024-11-28 04:54:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 8 proven. 204 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-28 04:54:47,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:47,951 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-28 04:54:47,952 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 20 treesize of output 19 [2024-11-28 04:54:48,151 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-28 04:54:48,151 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:54:48,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147954445] [2024-11-28 04:54:48,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147954445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:54:48,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:54:48,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2024-11-28 04:54:48,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629955282] [2024-11-28 04:54:48,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:54:48,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:54:48,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:54:48,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:54:48,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:54:48,153 INFO L87 Difference]: Start difference. First operand 2111 states and 2590 transitions. Second operand has 11 states, 9 states have (on average 7.666666666666667) internal successors, (69), 11 states have internal predecessors, (69), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-28 04:54:49,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:49,281 INFO L93 Difference]: Finished difference Result 4215 states and 5143 transitions. [2024-11-28 04:54:49,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:54:49,281 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.666666666666667) internal successors, (69), 11 states have internal predecessors, (69), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 123 [2024-11-28 04:54:49,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:49,289 INFO L225 Difference]: With dead ends: 4215 [2024-11-28 04:54:49,289 INFO L226 Difference]: Without dead ends: 2095 [2024-11-28 04:54:49,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:54:49,294 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 214 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:49,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 459 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:54:49,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2024-11-28 04:54:49,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 1979. [2024-11-28 04:54:49,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1979 states, 1646 states have (on average 1.1628189550425274) internal successors, (1914), 1666 states have internal predecessors, (1914), 240 states have call successors, (240), 92 states have call predecessors, (240), 92 states have return successors, (240), 220 states have call predecessors, (240), 240 states have call successors, (240) [2024-11-28 04:54:49,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 2394 transitions. [2024-11-28 04:54:49,564 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 2394 transitions. Word has length 123 [2024-11-28 04:54:49,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:49,564 INFO L471 AbstractCegarLoop]: Abstraction has 1979 states and 2394 transitions. [2024-11-28 04:54:49,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.666666666666667) internal successors, (69), 11 states have internal predecessors, (69), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-28 04:54:49,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 2394 transitions. [2024-11-28 04:54:49,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-28 04:54:49,565 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:49,565 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:49,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2024-11-28 04:54:49,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:49,766 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:49,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:49,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1191637367, now seen corresponding path program 1 times [2024-11-28 04:54:49,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:54:49,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545406986] [2024-11-28 04:54:49,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:49,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:49,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:54:49,769 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:54:49,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2024-11-28 04:54:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:50,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:54:50,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:50,582 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 17 treesize of output 9 [2024-11-28 04:54:50,787 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 20 treesize of output 12 [2024-11-28 04:54:50,839 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:54:50,839 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:54:50,839 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:54:50,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545406986] [2024-11-28 04:54:50,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545406986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:54:50,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:54:50,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:54:50,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066456209] [2024-11-28 04:54:50,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:54:50,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:54:50,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:54:50,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:54:50,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:54:50,841 INFO L87 Difference]: Start difference. First operand 1979 states and 2394 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:54:52,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:52,061 INFO L93 Difference]: Finished difference Result 4067 states and 4915 transitions. [2024-11-28 04:54:52,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:54:52,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 123 [2024-11-28 04:54:52,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:52,068 INFO L225 Difference]: With dead ends: 4067 [2024-11-28 04:54:52,068 INFO L226 Difference]: Without dead ends: 2091 [2024-11-28 04:54:52,071 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:54:52,072 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 145 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:52,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 921 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:54:52,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states. [2024-11-28 04:54:52,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 1989. [2024-11-28 04:54:52,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1989 states, 1656 states have (on average 1.1642512077294687) internal successors, (1928), 1676 states have internal predecessors, (1928), 240 states have call successors, (240), 92 states have call predecessors, (240), 92 states have return successors, (240), 220 states have call predecessors, (240), 240 states have call successors, (240) [2024-11-28 04:54:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 2408 transitions. [2024-11-28 04:54:52,334 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 2408 transitions. Word has length 123 [2024-11-28 04:54:52,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:52,334 INFO L471 AbstractCegarLoop]: Abstraction has 1989 states and 2408 transitions. [2024-11-28 04:54:52,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:54:52,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 2408 transitions. [2024-11-28 04:54:52,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-28 04:54:52,336 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:52,336 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:52,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2024-11-28 04:54:52,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:52,537 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:52,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:52,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2092212679, now seen corresponding path program 1 times [2024-11-28 04:54:52,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:54:52,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618385483] [2024-11-28 04:54:52,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:52,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:52,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:54:52,541 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:54:52,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2024-11-28 04:54:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:52,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:54:52,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:53,719 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 17 treesize of output 9 [2024-11-28 04:54:53,732 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 19 treesize of output 11 [2024-11-28 04:54:53,779 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:54:53,779 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:54:53,779 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:54:53,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618385483] [2024-11-28 04:54:53,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618385483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:54:53,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:54:53,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:54:53,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843073104] [2024-11-28 04:54:53,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:54:53,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:54:53,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:54:53,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:54:53,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:54:53,780 INFO L87 Difference]: Start difference. First operand 1989 states and 2408 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:54:55,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:55,066 INFO L93 Difference]: Finished difference Result 4075 states and 4923 transitions. [2024-11-28 04:54:55,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:54:55,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 123 [2024-11-28 04:54:55,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:55,072 INFO L225 Difference]: With dead ends: 4075 [2024-11-28 04:54:55,072 INFO L226 Difference]: Without dead ends: 2089 [2024-11-28 04:54:55,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:54:55,075 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 132 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:55,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 837 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:54:55,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2024-11-28 04:54:55,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1989. [2024-11-28 04:54:55,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1989 states, 1656 states have (on average 1.1630434782608696) internal successors, (1926), 1676 states have internal predecessors, (1926), 240 states have call successors, (240), 92 states have call predecessors, (240), 92 states have return successors, (240), 220 states have call predecessors, (240), 240 states have call successors, (240) [2024-11-28 04:54:55,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 2406 transitions. [2024-11-28 04:54:55,310 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 2406 transitions. Word has length 123 [2024-11-28 04:54:55,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:55,311 INFO L471 AbstractCegarLoop]: Abstraction has 1989 states and 2406 transitions. [2024-11-28 04:54:55,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:54:55,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 2406 transitions. [2024-11-28 04:54:55,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-28 04:54:55,312 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:55,312 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:55,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2024-11-28 04:54:55,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:55,513 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:55,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:55,513 INFO L85 PathProgramCache]: Analyzing trace with hash -524614201, now seen corresponding path program 1 times [2024-11-28 04:54:55,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:54:55,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218702127] [2024-11-28 04:54:55,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:55,514 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 [2024-11-28 04:54:55,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:54:55,516 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:54:55,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2024-11-28 04:54:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:55,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:54:55,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:56,346 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 18 treesize of output 10 [2024-11-28 04:54:56,391 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:54:56,391 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:54:56,392 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:54:56,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218702127] [2024-11-28 04:54:56,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218702127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:54:56,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:54:56,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:54:56,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136361754] [2024-11-28 04:54:56,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:54:56,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:54:56,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:54:56,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:54:56,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:54:56,393 INFO L87 Difference]: Start difference. First operand 1989 states and 2406 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:54:56,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:56,884 INFO L93 Difference]: Finished difference Result 3879 states and 4680 transitions. [2024-11-28 04:54:56,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:54:56,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 123 [2024-11-28 04:54:56,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:56,890 INFO L225 Difference]: With dead ends: 3879 [2024-11-28 04:54:56,890 INFO L226 Difference]: Without dead ends: 1893 [2024-11-28 04:54:56,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:54:56,893 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 78 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:56,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 468 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:54:56,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2024-11-28 04:54:57,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1867. [2024-11-28 04:54:57,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1534 states have (on average 1.151238591916558) internal successors, (1766), 1554 states have internal predecessors, (1766), 240 states have call successors, (240), 92 states have call predecessors, (240), 92 states have return successors, (240), 220 states have call predecessors, (240), 240 states have call successors, (240) [2024-11-28 04:54:57,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 2246 transitions. [2024-11-28 04:54:57,142 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 2246 transitions. Word has length 123 [2024-11-28 04:54:57,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:57,142 INFO L471 AbstractCegarLoop]: Abstraction has 1867 states and 2246 transitions. [2024-11-28 04:54:57,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:54:57,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 2246 transitions. [2024-11-28 04:54:57,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-28 04:54:57,144 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:57,145 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:57,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2024-11-28 04:54:57,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:57,345 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:57,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:57,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1446200787, now seen corresponding path program 1 times [2024-11-28 04:54:57,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:54:57,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404092434] [2024-11-28 04:54:57,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:57,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:57,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:54:57,351 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:54:57,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2024-11-28 04:54:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:57,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:54:57,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:57,791 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 17 treesize of output 9 [2024-11-28 04:54:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:54:58,206 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:54:58,206 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:54:58,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404092434] [2024-11-28 04:54:58,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404092434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:54:58,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:54:58,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:54:58,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891389599] [2024-11-28 04:54:58,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:54:58,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:54:58,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:54:58,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:54:58,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:54:58,207 INFO L87 Difference]: Start difference. First operand 1867 states and 2246 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:54:58,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:58,876 INFO L93 Difference]: Finished difference Result 5131 states and 6174 transitions. [2024-11-28 04:54:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:54:58,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 123 [2024-11-28 04:54:58,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:58,887 INFO L225 Difference]: With dead ends: 5131 [2024-11-28 04:54:58,887 INFO L226 Difference]: Without dead ends: 3267 [2024-11-28 04:54:58,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:54:58,890 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 170 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:58,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 343 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:54:58,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2024-11-28 04:54:59,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 2908. [2024-11-28 04:54:59,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2908 states, 2363 states have (on average 1.1434617012272534) internal successors, (2702), 2395 states have internal predecessors, (2702), 396 states have call successors, (396), 148 states have call predecessors, (396), 148 states have return successors, (396), 364 states have call predecessors, (396), 396 states have call successors, (396) [2024-11-28 04:54:59,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 3494 transitions. [2024-11-28 04:54:59,365 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 3494 transitions. Word has length 123 [2024-11-28 04:54:59,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:59,365 INFO L471 AbstractCegarLoop]: Abstraction has 2908 states and 3494 transitions. [2024-11-28 04:54:59,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:54:59,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 3494 transitions. [2024-11-28 04:54:59,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-28 04:54:59,367 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:59,367 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:59,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2024-11-28 04:54:59,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:59,571 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:59,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:59,572 INFO L85 PathProgramCache]: Analyzing trace with hash -888908975, now seen corresponding path program 1 times [2024-11-28 04:54:59,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:54:59,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940753010] [2024-11-28 04:54:59,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:59,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:54:59,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:54:59,575 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:54:59,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2024-11-28 04:55:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:00,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 04:55:00,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:55:00,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2024-11-28 04:55:00,279 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 24 treesize of output 16 [2024-11-28 04:55:00,557 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 54 treesize of output 42 [2024-11-28 04:55:00,561 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 51 treesize of output 35 [2024-11-28 04:55:00,732 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:55:00,732 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:55:00,732 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:55:00,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940753010] [2024-11-28 04:55:00,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940753010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:00,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:55:00,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 04:55:00,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479114454] [2024-11-28 04:55:00,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:00,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:55:00,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:55:00,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:55:00,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:55:00,733 INFO L87 Difference]: Start difference. First operand 2908 states and 3494 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:55:04,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:04,668 INFO L93 Difference]: Finished difference Result 5479 states and 6547 transitions. [2024-11-28 04:55:04,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 04:55:04,669 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 123 [2024-11-28 04:55:04,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:04,684 INFO L225 Difference]: With dead ends: 5479 [2024-11-28 04:55:04,684 INFO L226 Difference]: Without dead ends: 5477 [2024-11-28 04:55:04,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:55:04,686 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 388 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:04,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1716 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 04:55:04,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5477 states. [2024-11-28 04:55:05,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5477 to 4362. [2024-11-28 04:55:05,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4362 states, 3475 states have (on average 1.141294964028777) internal successors, (3966), 3533 states have internal predecessors, (3966), 636 states have call successors, (636), 250 states have call predecessors, (636), 250 states have return successors, (636), 578 states have call predecessors, (636), 636 states have call successors, (636) [2024-11-28 04:55:05,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4362 states to 4362 states and 5238 transitions. [2024-11-28 04:55:05,423 INFO L78 Accepts]: Start accepts. Automaton has 4362 states and 5238 transitions. Word has length 123 [2024-11-28 04:55:05,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:05,424 INFO L471 AbstractCegarLoop]: Abstraction has 4362 states and 5238 transitions. [2024-11-28 04:55:05,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:55:05,424 INFO L276 IsEmpty]: Start isEmpty. Operand 4362 states and 5238 transitions. [2024-11-28 04:55:05,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 04:55:05,426 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:05,426 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:05,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2024-11-28 04:55:05,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:55:05,630 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:05,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:05,631 INFO L85 PathProgramCache]: Analyzing trace with hash -143026736, now seen corresponding path program 1 times [2024-11-28 04:55:05,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:55:05,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290335041] [2024-11-28 04:55:05,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:05,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:55:05,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:55:05,634 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:55:05,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2024-11-28 04:55:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:06,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:55:06,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:55:06,162 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 19 treesize of output 11 [2024-11-28 04:55:06,202 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:55:06,202 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:55:06,202 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:55:06,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290335041] [2024-11-28 04:55:06,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290335041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:06,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:55:06,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:55:06,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756121653] [2024-11-28 04:55:06,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:06,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:55:06,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:55:06,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:55:06,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:55:06,204 INFO L87 Difference]: Start difference. First operand 4362 states and 5238 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:55:07,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:07,191 INFO L93 Difference]: Finished difference Result 6720 states and 8091 transitions. [2024-11-28 04:55:07,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:55:07,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 124 [2024-11-28 04:55:07,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:07,206 INFO L225 Difference]: With dead ends: 6720 [2024-11-28 04:55:07,206 INFO L226 Difference]: Without dead ends: 4771 [2024-11-28 04:55:07,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:55:07,211 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 67 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:07,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 734 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:55:07,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2024-11-28 04:55:07,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 4304. [2024-11-28 04:55:07,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4304 states, 3417 states have (on average 1.1369622475856014) internal successors, (3885), 3475 states have internal predecessors, (3885), 636 states have call successors, (636), 250 states have call predecessors, (636), 250 states have return successors, (636), 578 states have call predecessors, (636), 636 states have call successors, (636) [2024-11-28 04:55:07,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4304 states to 4304 states and 5157 transitions. [2024-11-28 04:55:07,986 INFO L78 Accepts]: Start accepts. Automaton has 4304 states and 5157 transitions. Word has length 124 [2024-11-28 04:55:07,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:07,986 INFO L471 AbstractCegarLoop]: Abstraction has 4304 states and 5157 transitions. [2024-11-28 04:55:07,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:55:07,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4304 states and 5157 transitions. [2024-11-28 04:55:07,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 04:55:07,988 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:07,988 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:07,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2024-11-28 04:55:08,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:55:08,189 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:08,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:08,189 INFO L85 PathProgramCache]: Analyzing trace with hash -2137171442, now seen corresponding path program 1 times [2024-11-28 04:55:08,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:55:08,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251846988] [2024-11-28 04:55:08,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:08,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:55:08,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:55:08,191 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:55:08,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2024-11-28 04:55:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:08,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:55:08,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:55:08,680 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 20 treesize of output 12 [2024-11-28 04:55:08,725 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:55:08,725 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:55:08,725 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:55:08,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251846988] [2024-11-28 04:55:08,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251846988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:08,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:55:08,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:55:08,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046892479] [2024-11-28 04:55:08,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:08,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:55:08,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:55:08,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:55:08,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:55:08,727 INFO L87 Difference]: Start difference. First operand 4304 states and 5157 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:55:09,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:09,947 INFO L93 Difference]: Finished difference Result 6689 states and 8044 transitions. [2024-11-28 04:55:09,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:55:09,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 124 [2024-11-28 04:55:09,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:09,963 INFO L225 Difference]: With dead ends: 6689 [2024-11-28 04:55:09,964 INFO L226 Difference]: Without dead ends: 4779 [2024-11-28 04:55:09,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:55:09,968 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 63 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:09,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 728 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:55:09,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2024-11-28 04:55:10,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 4344. [2024-11-28 04:55:10,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 3457 states have (on average 1.1400057853630314) internal successors, (3941), 3515 states have internal predecessors, (3941), 636 states have call successors, (636), 250 states have call predecessors, (636), 250 states have return successors, (636), 578 states have call predecessors, (636), 636 states have call successors, (636) [2024-11-28 04:55:10,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 5213 transitions. [2024-11-28 04:55:10,884 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 5213 transitions. Word has length 124 [2024-11-28 04:55:10,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:10,884 INFO L471 AbstractCegarLoop]: Abstraction has 4344 states and 5213 transitions. [2024-11-28 04:55:10,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:55:10,885 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 5213 transitions. [2024-11-28 04:55:10,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 04:55:10,886 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:10,886 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:10,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -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 [2024-11-28 04:55:11,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:55:11,087 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:11,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:11,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1146678604, now seen corresponding path program 1 times [2024-11-28 04:55:11,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:55:11,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916879669] [2024-11-28 04:55:11,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:11,088 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:55:11,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:55:11,089 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:55:11,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2024-11-28 04:55:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:11,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:55:11,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:55:11,705 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 46 treesize of output 34 [2024-11-28 04:55:11,799 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 45 treesize of output 29 [2024-11-28 04:55:13,784 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:55:13,784 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:55:13,784 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:55:13,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916879669] [2024-11-28 04:55:13,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916879669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:13,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:55:13,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:55:13,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113977716] [2024-11-28 04:55:13,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:13,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:55:13,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:55:13,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:55:13,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:55:13,785 INFO L87 Difference]: Start difference. First operand 4344 states and 5213 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:55:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:26,342 INFO L93 Difference]: Finished difference Result 6703 states and 8057 transitions. [2024-11-28 04:55:26,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:55:26,343 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 124 [2024-11-28 04:55:26,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:26,355 INFO L225 Difference]: With dead ends: 6703 [2024-11-28 04:55:26,355 INFO L226 Difference]: Without dead ends: 4781 [2024-11-28 04:55:26,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:55:26,359 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 117 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:26,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 1401 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2024-11-28 04:55:26,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2024-11-28 04:55:27,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 4344. [2024-11-28 04:55:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 3457 states have (on average 1.1400057853630314) internal successors, (3941), 3515 states have internal predecessors, (3941), 636 states have call successors, (636), 250 states have call predecessors, (636), 250 states have return successors, (636), 578 states have call predecessors, (636), 636 states have call successors, (636) [2024-11-28 04:55:27,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 5213 transitions. [2024-11-28 04:55:27,170 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 5213 transitions. Word has length 124 [2024-11-28 04:55:27,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:27,170 INFO L471 AbstractCegarLoop]: Abstraction has 4344 states and 5213 transitions. [2024-11-28 04:55:27,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:55:27,170 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 5213 transitions. [2024-11-28 04:55:27,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 04:55:27,171 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:27,171 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:27,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2024-11-28 04:55:27,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:55:27,372 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:27,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:27,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1964327054, now seen corresponding path program 1 times [2024-11-28 04:55:27,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:55:27,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406776204] [2024-11-28 04:55:27,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:27,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:55:27,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:55:27,374 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:55:27,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2024-11-28 04:55:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:27,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 04:55:27,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:55:28,549 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 21 [2024-11-28 04:55:28,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-28 04:55:28,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2024-11-28 04:55:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 214 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-28 04:55:28,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:55:29,642 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-28 04:55:29,642 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 20 treesize of output 19 [2024-11-28 04:55:29,904 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-28 04:55:29,904 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:55:29,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406776204] [2024-11-28 04:55:29,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406776204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:55:29,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:55:29,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2024-11-28 04:55:29,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897196686] [2024-11-28 04:55:29,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:55:29,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:55:29,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:55:29,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:55:29,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:55:29,906 INFO L87 Difference]: Start difference. First operand 4344 states and 5213 transitions. Second operand has 20 states, 18 states have (on average 4.611111111111111) internal successors, (83), 20 states have internal predecessors, (83), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-28 04:55:34,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:34,123 INFO L93 Difference]: Finished difference Result 7606 states and 9062 transitions. [2024-11-28 04:55:34,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 04:55:34,124 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.611111111111111) internal successors, (83), 20 states have internal predecessors, (83), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 124 [2024-11-28 04:55:34,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:34,144 INFO L225 Difference]: With dead ends: 7606 [2024-11-28 04:55:34,145 INFO L226 Difference]: Without dead ends: 5682 [2024-11-28 04:55:34,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=336, Invalid=1644, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 04:55:34,151 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 413 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:34,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1535 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 04:55:34,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5682 states. [2024-11-28 04:55:35,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5682 to 4296. [2024-11-28 04:55:35,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4296 states, 3391 states have (on average 1.1415511648481274) internal successors, (3871), 3449 states have internal predecessors, (3871), 648 states have call successors, (648), 256 states have call predecessors, (648), 256 states have return successors, (648), 590 states have call predecessors, (648), 648 states have call successors, (648) [2024-11-28 04:55:35,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 5167 transitions. [2024-11-28 04:55:35,134 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 5167 transitions. Word has length 124 [2024-11-28 04:55:35,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:35,135 INFO L471 AbstractCegarLoop]: Abstraction has 4296 states and 5167 transitions. [2024-11-28 04:55:35,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.611111111111111) internal successors, (83), 20 states have internal predecessors, (83), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-28 04:55:35,135 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 5167 transitions. [2024-11-28 04:55:35,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 04:55:35,136 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:35,136 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:35,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-28 04:55:35,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:55:35,336 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:35,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:35,337 INFO L85 PathProgramCache]: Analyzing trace with hash 198057037, now seen corresponding path program 1 times [2024-11-28 04:55:35,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:55:35,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039072190] [2024-11-28 04:55:35,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:35,337 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:55:35,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:55:35,339 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:55:35,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2024-11-28 04:55:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:35,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:55:35,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:55:36,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-28 04:55:36,715 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 17 treesize of output 9 [2024-11-28 04:55:36,782 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 21 [2024-11-28 04:55:37,019 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 214 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-28 04:55:37,019 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:55:38,042 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-28 04:55:38,042 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:55:38,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039072190] [2024-11-28 04:55:38,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039072190] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:55:38,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:55:38,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 22 [2024-11-28 04:55:38,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560833732] [2024-11-28 04:55:38,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:38,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:55:38,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:55:38,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:55:38,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:55:38,044 INFO L87 Difference]: Start difference. First operand 4296 states and 5167 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:55:39,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:39,722 INFO L93 Difference]: Finished difference Result 7492 states and 8978 transitions. [2024-11-28 04:55:39,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:55:39,723 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 125 [2024-11-28 04:55:39,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:39,734 INFO L225 Difference]: With dead ends: 7492 [2024-11-28 04:55:39,734 INFO L226 Difference]: Without dead ends: 4696 [2024-11-28 04:55:39,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:55:39,739 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 67 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:39,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1505 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:55:39,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2024-11-28 04:55:40,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 4044. [2024-11-28 04:55:40,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4044 states, 3139 states have (on average 1.1210576616756929) internal successors, (3519), 3197 states have internal predecessors, (3519), 648 states have call successors, (648), 256 states have call predecessors, (648), 256 states have return successors, (648), 590 states have call predecessors, (648), 648 states have call successors, (648) [2024-11-28 04:55:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4044 states to 4044 states and 4815 transitions. [2024-11-28 04:55:40,452 INFO L78 Accepts]: Start accepts. Automaton has 4044 states and 4815 transitions. Word has length 125 [2024-11-28 04:55:40,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:40,452 INFO L471 AbstractCegarLoop]: Abstraction has 4044 states and 4815 transitions. [2024-11-28 04:55:40,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:55:40,453 INFO L276 IsEmpty]: Start isEmpty. Operand 4044 states and 4815 transitions. [2024-11-28 04:55:40,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-28 04:55:40,456 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:40,456 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 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, 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] [2024-11-28 04:55:40,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2024-11-28 04:55:40,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:55:40,657 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:40,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:40,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1776183180, now seen corresponding path program 1 times [2024-11-28 04:55:40,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:55:40,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285729750] [2024-11-28 04:55:40,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:40,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:55:40,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:55:40,660 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:55:40,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -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 [2024-11-28 04:55:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:41,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:55:41,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:55:43,410 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 27 treesize of output 19 [2024-11-28 04:55:43,415 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 13 treesize of output 9 [2024-11-28 04:55:43,774 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 18 treesize of output 10 [2024-11-28 04:55:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 10 proven. 1054 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2024-11-28 04:55:45,108 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:55:45,664 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 36 treesize of output 32 [2024-11-28 04:55:46,454 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:55:46,455 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 27 treesize of output 30 [2024-11-28 04:55:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 25 proven. 116 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2024-11-28 04:55:47,048 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:55:47,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285729750] [2024-11-28 04:55:47,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285729750] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:55:47,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:55:47,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-11-28 04:55:47,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350567242] [2024-11-28 04:55:47,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:55:47,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:55:47,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:55:47,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:55:47,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:55:47,050 INFO L87 Difference]: Start difference. First operand 4044 states and 4815 transitions. Second operand has 15 states, 13 states have (on average 15.076923076923077) internal successors, (196), 14 states have internal predecessors, (196), 6 states have call successors, (56), 5 states have call predecessors, (56), 6 states have return successors, (56), 4 states have call predecessors, (56), 6 states have call successors, (56) [2024-11-28 04:55:50,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:50,980 INFO L93 Difference]: Finished difference Result 8340 states and 9859 transitions. [2024-11-28 04:55:50,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 04:55:50,980 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 15.076923076923077) internal successors, (196), 14 states have internal predecessors, (196), 6 states have call successors, (56), 5 states have call predecessors, (56), 6 states have return successors, (56), 4 states have call predecessors, (56), 6 states have call successors, (56) Word has length 246 [2024-11-28 04:55:50,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:50,986 INFO L225 Difference]: With dead ends: 8340 [2024-11-28 04:55:50,986 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 04:55:50,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 479 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=323, Invalid=937, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:55:50,994 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 622 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:50,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1047 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 04:55:50,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 04:55:50,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 04:55:50,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:50,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 04:55:50,999 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 246 [2024-11-28 04:55:50,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:50,999 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 04:55:50,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 15.076923076923077) internal successors, (196), 14 states have internal predecessors, (196), 6 states have call successors, (56), 5 states have call predecessors, (56), 6 states have return successors, (56), 4 states have call predecessors, (56), 6 states have call successors, (56) [2024-11-28 04:55:50,999 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 04:55:51,000 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 04:55:51,002 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 04:55:51,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -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 [2024-11-28 04:55:51,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c36d01f-4567-43b5-be2c-f94ef0da382f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:55:51,206 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:51,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 04:55:58,953 WARN L286 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 416 DAG size of output: 377 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or)