./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.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_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7001a99b958cb5a783d624aa4b4b483c2055b6507029df9ffd20f7aa9d768319 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 13:14:02,197 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 13:14:02,260 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-01 13:14:02,265 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 13:14:02,266 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 13:14:02,289 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 13:14:02,290 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 13:14:02,290 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 13:14:02,291 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 13:14:02,291 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 13:14:02,291 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 13:14:02,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 13:14:02,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 13:14:02,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 13:14:02,292 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 13:14:02,292 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 13:14:02,292 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 13:14:02,292 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 13:14:02,292 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 13:14:02,292 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 13:14:02,292 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 13:14:02,292 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 13:14:02,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 13:14:02,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 13:14:02,292 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 13:14:02,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 13:14:02,293 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 13:14:02,293 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 13:14:02,293 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 13:14:02,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 13:14:02,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 13:14:02,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 13:14:02,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:14:02,293 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 13:14:02,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 13:14:02,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 13:14:02,294 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 13:14:02,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:14:02,294 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 13:14:02,294 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 13:14:02,294 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 13:14:02,294 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 13:14:02,294 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 13:14:02,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 13:14:02,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 13:14:02,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 13:14:02,294 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 13:14:02,294 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 13:14:02,295 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_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7001a99b958cb5a783d624aa4b4b483c2055b6507029df9ffd20f7aa9d768319 [2024-12-01 13:14:02,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 13:14:02,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 13:14:02,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 13:14:02,547 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 13:14:02,548 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 13:14:02,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i [2024-12-01 13:14:05,227 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/data/aae2fdffc/d84999f8a1a6417799db625d325da639/FLAGfc452fde7 [2024-12-01 13:14:05,399 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 13:14:05,399 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i [2024-12-01 13:14:05,408 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/data/aae2fdffc/d84999f8a1a6417799db625d325da639/FLAGfc452fde7 [2024-12-01 13:14:05,426 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/data/aae2fdffc/d84999f8a1a6417799db625d325da639 [2024-12-01 13:14:05,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 13:14:05,430 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 13:14:05,431 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 13:14:05,431 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 13:14:05,435 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 13:14:05,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:14:05" (1/1) ... [2024-12-01 13:14:05,436 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c2950d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:05, skipping insertion in model container [2024-12-01 13:14:05,436 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:14:05" (1/1) ... [2024-12-01 13:14:05,449 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 13:14:05,553 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_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i[915,928] [2024-12-01 13:14:05,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 13:14:05,599 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 13:14:05,607 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_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i[915,928] [2024-12-01 13:14:05,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 13:14:05,638 INFO L204 MainTranslator]: Completed translation [2024-12-01 13:14:05,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:05 WrapperNode [2024-12-01 13:14:05,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 13:14:05,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 13:14:05,640 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 13:14:05,640 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 13:14:05,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:05" (1/1) ... [2024-12-01 13:14:05,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:05" (1/1) ... [2024-12-01 13:14:05,677 INFO L138 Inliner]: procedures = 26, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 91 [2024-12-01 13:14:05,678 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 13:14:05,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 13:14:05,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 13:14:05,678 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 13:14:05,689 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:05" (1/1) ... [2024-12-01 13:14:05,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:05" (1/1) ... [2024-12-01 13:14:05,692 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:05" (1/1) ... [2024-12-01 13:14:05,704 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-01 13:14:05,705 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:05" (1/1) ... [2024-12-01 13:14:05,705 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:05" (1/1) ... [2024-12-01 13:14:05,710 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:05" (1/1) ... [2024-12-01 13:14:05,711 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:05" (1/1) ... [2024-12-01 13:14:05,714 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:05" (1/1) ... [2024-12-01 13:14:05,716 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:05" (1/1) ... [2024-12-01 13:14:05,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:05" (1/1) ... [2024-12-01 13:14:05,719 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 13:14:05,720 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 13:14:05,721 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 13:14:05,721 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 13:14:05,722 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:05" (1/1) ... [2024-12-01 13:14:05,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:14:05,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:14:05,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 13:14:05,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 13:14:05,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 13:14:05,772 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-01 13:14:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-01 13:14:05,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 13:14:05,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 13:14:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 13:14:05,826 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 13:14:05,827 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 13:14:06,015 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-12-01 13:14:06,015 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 13:14:06,022 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 13:14:06,022 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-01 13:14:06,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:14:06 BoogieIcfgContainer [2024-12-01 13:14:06,022 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 13:14:06,024 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 13:14:06,024 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 13:14:06,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 13:14:06,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 01:14:05" (1/3) ... [2024-12-01 13:14:06,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163c1d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:14:06, skipping insertion in model container [2024-12-01 13:14:06,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:05" (2/3) ... [2024-12-01 13:14:06,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163c1d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:14:06, skipping insertion in model container [2024-12-01 13:14:06,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:14:06" (3/3) ... [2024-12-01 13:14:06,030 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-21.i [2024-12-01 13:14:06,043 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 13:14:06,045 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-while_file-21.i that has 2 procedures, 41 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-01 13:14:06,091 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 13:14:06,100 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;@251ac687, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 13:14:06,101 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-01 13:14:06,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 30 states have internal predecessors, (40), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-12-01 13:14:06,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-01 13:14:06,112 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:14:06,113 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:14:06,114 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:14:06,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:14:06,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1174544175, now seen corresponding path program 1 times [2024-12-01 13:14:06,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:14:06,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647352761] [2024-12-01 13:14:06,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:14:06,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:14:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:14:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-01 13:14:06,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:14:06,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647352761] [2024-12-01 13:14:06,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647352761] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:14:06,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482385250] [2024-12-01 13:14:06,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:14:06,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:14:06,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:14:06,296 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:14:06,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 13:14:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:14:06,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-01 13:14:06,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:14:06,418 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-01 13:14:06,418 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:14:06,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482385250] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:14:06,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:14:06,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-01 13:14:06,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904642635] [2024-12-01 13:14:06,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:14:06,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-01 13:14:06,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:14:06,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-01 13:14:06,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 13:14:06,445 INFO L87 Difference]: Start difference. First operand has 41 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 30 states have internal predecessors, (40), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-01 13:14:06,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:14:06,462 INFO L93 Difference]: Finished difference Result 75 states and 119 transitions. [2024-12-01 13:14:06,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-01 13:14:06,464 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 64 [2024-12-01 13:14:06,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:14:06,468 INFO L225 Difference]: With dead ends: 75 [2024-12-01 13:14:06,468 INFO L226 Difference]: Without dead ends: 37 [2024-12-01 13:14:06,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 13:14:06,473 INFO L435 NwaCegarLoop]: 51 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, 51 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:14:06,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:14:06,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-12-01 13:14:06,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-12-01 13:14:06,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-12-01 13:14:06,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2024-12-01 13:14:06,499 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 64 [2024-12-01 13:14:06,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:14:06,499 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2024-12-01 13:14:06,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-01 13:14:06,499 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2024-12-01 13:14:06,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-01 13:14:06,501 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:14:06,501 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:14:06,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-01 13:14:06,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:14:06,702 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:14:06,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:14:06,702 INFO L85 PathProgramCache]: Analyzing trace with hash -562669323, now seen corresponding path program 1 times [2024-12-01 13:14:06,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:14:06,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300764495] [2024-12-01 13:14:06,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:14:06,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:14:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:14:06,875 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-01 13:14:06,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:14:06,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300764495] [2024-12-01 13:14:06,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300764495] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:14:06,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:14:06,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 13:14:06,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203730869] [2024-12-01 13:14:06,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:14:06,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:14:06,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:14:06,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:14:06,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:14:06,877 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:14:06,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:14:06,896 INFO L93 Difference]: Finished difference Result 71 states and 99 transitions. [2024-12-01 13:14:06,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:14:06,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 64 [2024-12-01 13:14:06,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:14:06,898 INFO L225 Difference]: With dead ends: 71 [2024-12-01 13:14:06,898 INFO L226 Difference]: Without dead ends: 37 [2024-12-01 13:14:06,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:14:06,899 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:14:06,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:14:06,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-12-01 13:14:06,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-12-01 13:14:06,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-12-01 13:14:06,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions. [2024-12-01 13:14:06,905 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 64 [2024-12-01 13:14:06,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:14:06,905 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 50 transitions. [2024-12-01 13:14:06,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:14:06,906 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2024-12-01 13:14:06,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-01 13:14:06,907 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:14:06,908 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:14:06,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-01 13:14:06,908 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:14:06,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:14:06,909 INFO L85 PathProgramCache]: Analyzing trace with hash -505411021, now seen corresponding path program 1 times [2024-12-01 13:14:06,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:14:06,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758961249] [2024-12-01 13:14:06,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:14:06,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:14:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:14:08,010 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-01 13:14:08,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:14:08,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758961249] [2024-12-01 13:14:08,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758961249] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:14:08,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:14:08,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 13:14:08,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317904833] [2024-12-01 13:14:08,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:14:08,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:14:08,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:14:08,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:14:08,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:14:08,013 INFO L87 Difference]: Start difference. First operand 37 states and 50 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:14:08,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:14:08,243 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2024-12-01 13:14:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 13:14:08,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 64 [2024-12-01 13:14:08,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:14:08,246 INFO L225 Difference]: With dead ends: 84 [2024-12-01 13:14:08,246 INFO L226 Difference]: Without dead ends: 82 [2024-12-01 13:14:08,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:14:08,247 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 61 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:14:08,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 287 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:14:08,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-12-01 13:14:08,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 69. [2024-12-01 13:14:08,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.183673469387755) internal successors, (58), 50 states have internal predecessors, (58), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-12-01 13:14:08,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 90 transitions. [2024-12-01 13:14:08,264 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 90 transitions. Word has length 64 [2024-12-01 13:14:08,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:14:08,264 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 90 transitions. [2024-12-01 13:14:08,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:14:08,265 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 90 transitions. [2024-12-01 13:14:08,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-01 13:14:08,266 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:14:08,266 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:14:08,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-01 13:14:08,267 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:14:08,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:14:08,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1278414269, now seen corresponding path program 1 times [2024-12-01 13:14:08,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:14:08,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367902530] [2024-12-01 13:14:08,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:14:08,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:14:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:14:09,070 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-01 13:14:09,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:14:09,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367902530] [2024-12-01 13:14:09,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367902530] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:14:09,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:14:09,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-01 13:14:09,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111022404] [2024-12-01 13:14:09,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:14:09,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 13:14:09,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:14:09,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 13:14:09,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-01 13:14:09,073 INFO L87 Difference]: Start difference. First operand 69 states and 90 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:14:09,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:14:09,364 INFO L93 Difference]: Finished difference Result 88 states and 109 transitions. [2024-12-01 13:14:09,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:14:09,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 65 [2024-12-01 13:14:09,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:14:09,367 INFO L225 Difference]: With dead ends: 88 [2024-12-01 13:14:09,367 INFO L226 Difference]: Without dead ends: 86 [2024-12-01 13:14:09,367 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:14:09,368 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 63 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 13:14:09,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 297 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 13:14:09,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-12-01 13:14:09,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2024-12-01 13:14:09,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.173913043478261) internal successors, (54), 47 states have internal predecessors, (54), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-12-01 13:14:09,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2024-12-01 13:14:09,384 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 65 [2024-12-01 13:14:09,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:14:09,385 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2024-12-01 13:14:09,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:14:09,385 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2024-12-01 13:14:09,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-01 13:14:09,386 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:14:09,387 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:14:09,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-01 13:14:09,387 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:14:09,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:14:09,387 INFO L85 PathProgramCache]: Analyzing trace with hash 434558742, now seen corresponding path program 1 times [2024-12-01 13:14:09,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:14:09,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224782443] [2024-12-01 13:14:09,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:14:09,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:14:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-01 13:14:09,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1467345037] [2024-12-01 13:14:09,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:14:09,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:14:09,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:14:09,430 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:14:09,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-01 13:14:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-01 13:14:09,519 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-01 13:14:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-01 13:14:09,578 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-01 13:14:09,578 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-01 13:14:09,579 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-01 13:14:09,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-01 13:14:09,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:14:09,785 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-12-01 13:14:09,830 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-01 13:14:09,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 01:14:09 BoogieIcfgContainer [2024-12-01 13:14:09,834 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-01 13:14:09,834 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-01 13:14:09,834 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-01 13:14:09,834 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-01 13:14:09,835 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:14:06" (3/4) ... [2024-12-01 13:14:09,837 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-01 13:14:09,838 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-01 13:14:09,839 INFO L158 Benchmark]: Toolchain (without parser) took 4409.00ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 117.4MB in the beginning and 107.3MB in the end (delta: 10.2MB). Peak memory consumption was 148.1MB. Max. memory is 16.1GB. [2024-12-01 13:14:09,839 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 142.6MB. Free memory was 84.1MB in the beginning and 84.1MB in the end (delta: 31.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 13:14:09,839 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.08ms. Allocated memory is still 142.6MB. Free memory was 117.3MB in the beginning and 104.7MB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-01 13:14:09,840 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.09ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 102.8MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-01 13:14:09,840 INFO L158 Benchmark]: Boogie Preprocessor took 41.62ms. Allocated memory is still 142.6MB. Free memory was 102.8MB in the beginning and 100.5MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 13:14:09,840 INFO L158 Benchmark]: RCFGBuilder took 301.87ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 86.0MB in the end (delta: 14.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-01 13:14:09,841 INFO L158 Benchmark]: TraceAbstraction took 3809.89ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 85.5MB in the beginning and 108.6MB in the end (delta: -23.2MB). Peak memory consumption was 114.6MB. Max. memory is 16.1GB. [2024-12-01 13:14:09,841 INFO L158 Benchmark]: Witness Printer took 3.68ms. Allocated memory is still 285.2MB. Free memory was 108.6MB in the beginning and 107.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 13:14:09,843 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 142.6MB. Free memory was 84.1MB in the beginning and 84.1MB in the end (delta: 31.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.08ms. Allocated memory is still 142.6MB. Free memory was 117.3MB in the beginning and 104.7MB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.09ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 102.8MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.62ms. Allocated memory is still 142.6MB. Free memory was 102.8MB in the beginning and 100.5MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 301.87ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 86.0MB in the end (delta: 14.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3809.89ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 85.5MB in the beginning and 108.6MB in the end (delta: -23.2MB). Peak memory consumption was 114.6MB. Max. memory is 16.1GB. * Witness Printer took 3.68ms. Allocated memory is still 285.2MB. Free memory was 108.6MB in the beginning and 107.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 74, overapproximation of someBinaryDOUBLEComparisonOperation at line 72, overapproximation of someBinaryDOUBLEComparisonOperation at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 85, overapproximation of someBinaryDOUBLEComparisonOperation at line 70. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned short int var_1_1 = 32; [L23] unsigned char var_1_7 = 1; [L24] signed char var_1_8 = -32; [L25] signed char var_1_9 = -8; [L26] unsigned char var_1_10 = 2; [L27] double var_1_11 = 15.6; [L28] double var_1_12 = 15.4; [L29] double var_1_13 = 32.2; [L30] unsigned char var_1_14 = 5; [L31] unsigned short int last_1_var_1_1 = 32; [L32] signed char last_1_var_1_8 = -32; [L33] unsigned char last_1_var_1_10 = 2; VAL [isInitial=0, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=-8] [L89] isInitial = 1 [L90] FCALL initially() [L92] CALL updateLastVariables() [L80] last_1_var_1_1 = var_1_1 [L81] last_1_var_1_8 = var_1_8 [L82] last_1_var_1_10 = var_1_10 VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=-8] [L92] RET updateLastVariables() [L93] CALL updateVariables() [L63] var_1_7 = __VERIFIER_nondet_uchar() [L64] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_8=-32, var_1_9=-8] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_8=-32, var_1_9=-8] [L64] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_8=-32, var_1_9=-8] [L65] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=-8] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=-8] [L65] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=-8] [L66] var_1_9 = __VERIFIER_nondet_char() [L67] CALL assume_abort_if_not(var_1_9 >= -126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L67] RET assume_abort_if_not(var_1_9 >= -126) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L68] CALL assume_abort_if_not(var_1_9 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L68] RET assume_abort_if_not(var_1_9 <= 126) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L69] var_1_11 = __VERIFIER_nondet_double() [L70] CALL assume_abort_if_not((var_1_11 >= -922337.2036854776000e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854776000e+12F && var_1_11 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L70] RET assume_abort_if_not((var_1_11 >= -922337.2036854776000e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854776000e+12F && var_1_11 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L71] var_1_12 = __VERIFIER_nondet_double() [L72] CALL assume_abort_if_not((var_1_12 >= -922337.2036854776000e+13F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854776000e+12F && var_1_12 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L72] RET assume_abort_if_not((var_1_12 >= -922337.2036854776000e+13F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854776000e+12F && var_1_12 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L73] var_1_13 = __VERIFIER_nondet_double() [L74] CALL assume_abort_if_not((var_1_13 >= -922337.2036854776000e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854776000e+12F && var_1_13 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L74] RET assume_abort_if_not((var_1_13 >= -922337.2036854776000e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854776000e+12F && var_1_13 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=5, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L75] var_1_14 = __VERIFIER_nondet_uchar() [L76] CALL assume_abort_if_not(var_1_14 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L76] RET assume_abort_if_not(var_1_14 >= 0) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L77] CALL assume_abort_if_not(var_1_14 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L77] RET assume_abort_if_not(var_1_14 <= 254) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L93] RET updateVariables() [L94] CALL step() [L37] signed long int stepLocal_2 = (((last_1_var_1_8) < (last_1_var_1_8)) ? (last_1_var_1_8) : (last_1_var_1_8)); [L38] unsigned char stepLocal_1 = var_1_7; VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, stepLocal_1=1, stepLocal_2=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L39] COND TRUE ((((var_1_11) < (var_1_12)) ? (var_1_11) : (var_1_12))) <= var_1_13 VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, stepLocal_1=1, stepLocal_2=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L40] COND FALSE !(stepLocal_1 && (last_1_var_1_8 >= var_1_9)) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, stepLocal_2=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L48] signed long int stepLocal_0 = ((((- last_1_var_1_10)) > (last_1_var_1_10)) ? ((- last_1_var_1_10)) : (last_1_var_1_10)); VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, stepLocal_0=2, stepLocal_2=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=1, var_1_8=-32, var_1_9=0] [L49] COND FALSE !(last_1_var_1_10 < stepLocal_0) [L52] var_1_8 = var_1_9 VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, stepLocal_2=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=1, var_1_8=0, var_1_9=0] [L54] COND FALSE !((var_1_10 + ((((var_1_10) > (var_1_10)) ? (var_1_10) : (var_1_10)))) < (var_1_10 * var_1_8)) [L59] var_1_1 = var_1_10 VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, stepLocal_2=-32, var_1_10=2, var_1_14=0, var_1_1=2, var_1_7=1, var_1_8=0, var_1_9=0] [L94] RET step() [L95] CALL, EXPR property() [L85-L86] return ((((var_1_10 + ((((var_1_10) > (var_1_10)) ? (var_1_10) : (var_1_10)))) < (var_1_10 * var_1_8)) ? (var_1_7 ? (var_1_1 == ((unsigned short int) var_1_10)) : 1) : (var_1_1 == ((unsigned short int) var_1_10))) && ((last_1_var_1_10 < (((((- last_1_var_1_10)) > (last_1_var_1_10)) ? ((- last_1_var_1_10)) : (last_1_var_1_10)))) ? (var_1_8 == ((signed char) ((((var_1_9) < 0 ) ? -(var_1_9) : (var_1_9))))) : (var_1_8 == ((signed char) var_1_9)))) && ((((((var_1_11) < (var_1_12)) ? (var_1_11) : (var_1_12))) <= var_1_13) ? ((var_1_7 && (last_1_var_1_8 >= var_1_9)) ? ((last_1_var_1_1 <= ((((last_1_var_1_8) < (last_1_var_1_8)) ? (last_1_var_1_8) : (last_1_var_1_8)))) ? (var_1_10 == ((unsigned char) var_1_14)) : 1) : 1) : (var_1_10 == ((unsigned char) var_1_14))) ; VAL [\result=0, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=0, var_1_1=2, var_1_7=1, var_1_8=0, var_1_9=0] [L95] RET, EXPR property() [L95] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=0, var_1_1=2, var_1_7=1, var_1_8=0, var_1_9=0] [L19] reach_error() VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=0, var_1_1=2, var_1_7=1, var_1_8=0, var_1_9=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 5, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 124 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 124 mSDsluCounter, 728 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 482 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 166 IncrementalHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 246 mSDtfsCounter, 166 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=3, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 33 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 451 NumberOfCodeBlocks, 451 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 316 ConstructedInterpolants, 0 QuantifiedInterpolants, 531 SizeOfPredicates, 0 NumberOfNonLiveVariables, 172 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 704/720 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-12-01 13:14:09,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7001a99b958cb5a783d624aa4b4b483c2055b6507029df9ffd20f7aa9d768319 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 13:14:11,816 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 13:14:11,891 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-01 13:14:11,896 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 13:14:11,896 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 13:14:11,919 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 13:14:11,919 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 13:14:11,919 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 13:14:11,919 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 13:14:11,920 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 13:14:11,920 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 13:14:11,920 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 13:14:11,920 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 13:14:11,920 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 13:14:11,920 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 13:14:11,921 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 13:14:11,921 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 13:14:11,921 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 13:14:11,921 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 13:14:11,921 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 13:14:11,921 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 13:14:11,921 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 13:14:11,921 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 13:14:11,921 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-01 13:14:11,921 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-01 13:14:11,921 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-01 13:14:11,922 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 13:14:11,922 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 13:14:11,922 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 13:14:11,922 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 13:14:11,922 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 13:14:11,922 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 13:14:11,922 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 13:14:11,922 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 13:14:11,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:14:11,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 13:14:11,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 13:14:11,923 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 13:14:11,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 13:14:11,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:14:11,923 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 13:14:11,923 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 13:14:11,923 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 13:14:11,923 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 13:14:11,923 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-01 13:14:11,924 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-01 13:14:11,924 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 13:14:11,924 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 13:14:11,924 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 13:14:11,924 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 13:14:11,924 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_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7001a99b958cb5a783d624aa4b4b483c2055b6507029df9ffd20f7aa9d768319 [2024-12-01 13:14:12,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 13:14:12,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 13:14:12,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 13:14:12,151 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 13:14:12,152 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 13:14:12,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i [2024-12-01 13:14:14,757 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/data/29508f03f/9e858d87fb2e4645beae29955d5eb331/FLAGb9694d5de [2024-12-01 13:14:14,980 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 13:14:14,981 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i [2024-12-01 13:14:14,995 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/data/29508f03f/9e858d87fb2e4645beae29955d5eb331/FLAGb9694d5de [2024-12-01 13:14:15,010 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/data/29508f03f/9e858d87fb2e4645beae29955d5eb331 [2024-12-01 13:14:15,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 13:14:15,014 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 13:14:15,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 13:14:15,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 13:14:15,020 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 13:14:15,021 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:14:15" (1/1) ... [2024-12-01 13:14:15,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73401b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:15, skipping insertion in model container [2024-12-01 13:14:15,023 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:14:15" (1/1) ... [2024-12-01 13:14:15,039 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 13:14:15,181 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_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i[915,928] [2024-12-01 13:14:15,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 13:14:15,234 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 13:14:15,243 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_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-21.i[915,928] [2024-12-01 13:14:15,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 13:14:15,275 INFO L204 MainTranslator]: Completed translation [2024-12-01 13:14:15,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:15 WrapperNode [2024-12-01 13:14:15,276 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 13:14:15,277 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 13:14:15,277 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 13:14:15,277 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 13:14:15,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:15" (1/1) ... [2024-12-01 13:14:15,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:15" (1/1) ... [2024-12-01 13:14:15,314 INFO L138 Inliner]: procedures = 27, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 90 [2024-12-01 13:14:15,314 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 13:14:15,315 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 13:14:15,315 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 13:14:15,315 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 13:14:15,322 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:15" (1/1) ... [2024-12-01 13:14:15,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:15" (1/1) ... [2024-12-01 13:14:15,325 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:15" (1/1) ... [2024-12-01 13:14:15,335 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-01 13:14:15,336 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:15" (1/1) ... [2024-12-01 13:14:15,336 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:15" (1/1) ... [2024-12-01 13:14:15,343 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:15" (1/1) ... [2024-12-01 13:14:15,344 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:15" (1/1) ... [2024-12-01 13:14:15,348 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:15" (1/1) ... [2024-12-01 13:14:15,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:15" (1/1) ... [2024-12-01 13:14:15,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:15" (1/1) ... [2024-12-01 13:14:15,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 13:14:15,355 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 13:14:15,355 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 13:14:15,355 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 13:14:15,356 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:15" (1/1) ... [2024-12-01 13:14:15,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:14:15,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:14:15,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 13:14:15,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 13:14:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 13:14:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-01 13:14:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-01 13:14:15,408 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-01 13:14:15,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 13:14:15,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 13:14:15,473 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 13:14:15,474 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 13:14:15,724 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-12-01 13:14:15,724 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 13:14:15,733 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 13:14:15,742 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-01 13:14:15,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:14:15 BoogieIcfgContainer [2024-12-01 13:14:15,743 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 13:14:15,745 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 13:14:15,746 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 13:14:15,750 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 13:14:15,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 01:14:15" (1/3) ... [2024-12-01 13:14:15,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef000e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:14:15, skipping insertion in model container [2024-12-01 13:14:15,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:15" (2/3) ... [2024-12-01 13:14:15,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef000e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:14:15, skipping insertion in model container [2024-12-01 13:14:15,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:14:15" (3/3) ... [2024-12-01 13:14:15,753 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-21.i [2024-12-01 13:14:15,765 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 13:14:15,767 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-while_file-21.i that has 2 procedures, 41 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-01 13:14:15,813 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 13:14:15,824 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;@4937efe8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 13:14:15,824 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-01 13:14:15,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 30 states have internal predecessors, (40), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-12-01 13:14:15,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-01 13:14:15,832 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:14:15,833 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:14:15,833 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:14:15,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:14:15,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1174544175, now seen corresponding path program 1 times [2024-12-01 13:14:15,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 13:14:15,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299730862] [2024-12-01 13:14:15,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:14:15,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:14:15,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-01 13:14:15,849 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-01 13:14:15,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-12-01 13:14:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:14:15,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-01 13:14:16,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:14:16,032 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-12-01 13:14:16,032 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:14:16,033 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 13:14:16,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299730862] [2024-12-01 13:14:16,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299730862] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:14:16,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:14:16,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 13:14:16,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514884470] [2024-12-01 13:14:16,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:14:16,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-01 13:14:16,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 13:14:16,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-01 13:14:16,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 13:14:16,057 INFO L87 Difference]: Start difference. First operand has 41 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 30 states have internal predecessors, (40), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-01 13:14:16,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:14:16,076 INFO L93 Difference]: Finished difference Result 75 states and 119 transitions. [2024-12-01 13:14:16,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-01 13:14:16,077 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 64 [2024-12-01 13:14:16,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:14:16,083 INFO L225 Difference]: With dead ends: 75 [2024-12-01 13:14:16,083 INFO L226 Difference]: Without dead ends: 37 [2024-12-01 13:14:16,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 13:14:16,088 INFO L435 NwaCegarLoop]: 51 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, 51 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:14:16,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:14:16,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-12-01 13:14:16,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-12-01 13:14:16,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-12-01 13:14:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2024-12-01 13:14:16,120 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 64 [2024-12-01 13:14:16,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:14:16,120 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2024-12-01 13:14:16,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-01 13:14:16,120 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2024-12-01 13:14:16,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-01 13:14:16,122 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:14:16,122 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:14:16,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-12-01 13:14:16,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:14:16,323 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:14:16,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:14:16,323 INFO L85 PathProgramCache]: Analyzing trace with hash -562669323, now seen corresponding path program 1 times [2024-12-01 13:14:16,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 13:14:16,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121958115] [2024-12-01 13:14:16,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:14:16,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:14:16,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-01 13:14:16,326 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-01 13:14:16,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-12-01 13:14:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:14:16,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-01 13:14:16,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:14:16,695 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-01 13:14:16,696 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:14:16,696 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 13:14:16,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121958115] [2024-12-01 13:14:16,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121958115] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:14:16,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:14:16,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 13:14:16,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271679778] [2024-12-01 13:14:16,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:14:16,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 13:14:16,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 13:14:16,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 13:14:16,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:14:16,698 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:14:16,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:14:16,989 INFO L93 Difference]: Finished difference Result 116 states and 161 transitions. [2024-12-01 13:14:16,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 13:14:16,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 64 [2024-12-01 13:14:16,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:14:16,993 INFO L225 Difference]: With dead ends: 116 [2024-12-01 13:14:16,993 INFO L226 Difference]: Without dead ends: 82 [2024-12-01 13:14:16,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:14:16,994 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 45 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 13:14:16,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 167 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 13:14:16,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-12-01 13:14:17,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 71. [2024-12-01 13:14:17,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.26) internal successors, (63), 50 states have internal predecessors, (63), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-12-01 13:14:17,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 99 transitions. [2024-12-01 13:14:17,012 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 99 transitions. Word has length 64 [2024-12-01 13:14:17,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:14:17,012 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 99 transitions. [2024-12-01 13:14:17,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:14:17,012 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 99 transitions. [2024-12-01 13:14:17,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-01 13:14:17,013 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:14:17,014 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:14:17,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-12-01 13:14:17,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:14:17,214 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:14:17,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:14:17,215 INFO L85 PathProgramCache]: Analyzing trace with hash -505411021, now seen corresponding path program 1 times [2024-12-01 13:14:17,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 13:14:17,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834584109] [2024-12-01 13:14:17,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:14:17,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:14:17,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-01 13:14:17,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-01 13:14:17,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-12-01 13:14:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:14:17,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-01 13:14:17,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:14:50,521 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-01 13:14:50,522 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:14:50,522 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 13:14:50,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834584109] [2024-12-01 13:14:50,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834584109] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:14:50,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:14:50,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-01 13:14:50,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446578543] [2024-12-01 13:14:50,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:14:50,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-01 13:14:50,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 13:14:50,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-01 13:14:50,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:14:50,524 INFO L87 Difference]: Start difference. First operand 71 states and 99 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:14:50,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:14:50,947 INFO L93 Difference]: Finished difference Result 124 states and 167 transitions. [2024-12-01 13:14:50,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-01 13:14:50,948 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 64 [2024-12-01 13:14:50,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:14:50,950 INFO L225 Difference]: With dead ends: 124 [2024-12-01 13:14:50,950 INFO L226 Difference]: Without dead ends: 122 [2024-12-01 13:14:50,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-12-01 13:14:50,951 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 64 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 13:14:50,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 215 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 13:14:50,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-12-01 13:14:50,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 101. [2024-12-01 13:14:50,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 70 states have internal predecessors, (87), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-12-01 13:14:50,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 141 transitions. [2024-12-01 13:14:50,970 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 141 transitions. Word has length 64 [2024-12-01 13:14:50,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:14:50,970 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 141 transitions. [2024-12-01 13:14:50,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:14:50,970 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 141 transitions. [2024-12-01 13:14:50,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-01 13:14:50,972 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:14:50,972 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:14:50,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-12-01 13:14:51,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:14:51,172 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:14:51,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:14:51,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1278414269, now seen corresponding path program 1 times [2024-12-01 13:14:51,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 13:14:51,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672317320] [2024-12-01 13:14:51,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:14:51,174 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:14:51,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-01 13:14:51,175 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-01 13:14:51,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-12-01 13:14:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:14:51,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-01 13:14:51,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:15:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-01 13:15:05,399 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:15:05,399 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 13:15:05,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672317320] [2024-12-01 13:15:05,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672317320] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:15:05,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:15:05,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-01 13:15:05,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530196453] [2024-12-01 13:15:05,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:15:05,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 13:15:05,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 13:15:05,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 13:15:05,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:15:05,400 INFO L87 Difference]: Start difference. First operand 101 states and 141 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:15:05,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:15:05,851 INFO L93 Difference]: Finished difference Result 129 states and 172 transitions. [2024-12-01 13:15:05,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 13:15:05,853 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 65 [2024-12-01 13:15:05,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:15:05,855 INFO L225 Difference]: With dead ends: 129 [2024-12-01 13:15:05,855 INFO L226 Difference]: Without dead ends: 127 [2024-12-01 13:15:05,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-12-01 13:15:05,856 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 62 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 13:15:05,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 225 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 13:15:05,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-12-01 13:15:05,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2024-12-01 13:15:05,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 71 states have (on average 1.2535211267605635) internal successors, (89), 71 states have internal predecessors, (89), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-12-01 13:15:05,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 143 transitions. [2024-12-01 13:15:05,873 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 143 transitions. Word has length 65 [2024-12-01 13:15:05,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:15:05,874 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 143 transitions. [2024-12-01 13:15:05,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:15:05,874 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 143 transitions. [2024-12-01 13:15:05,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-01 13:15:05,875 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:15:05,875 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:15:05,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-12-01 13:15:06,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:15:06,076 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:15:06,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:15:06,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1276567227, now seen corresponding path program 1 times [2024-12-01 13:15:06,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 13:15:06,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455768212] [2024-12-01 13:15:06,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:15:06,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:15:06,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-01 13:15:06,078 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-01 13:15:06,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-12-01 13:15:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:15:06,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-01 13:15:06,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:15:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-01 13:15:36,513 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:15:36,513 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 13:15:36,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455768212] [2024-12-01 13:15:36,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455768212] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:15:36,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:15:36,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-01 13:15:36,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267347458] [2024-12-01 13:15:36,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:15:36,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 13:15:36,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 13:15:36,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 13:15:36,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:15:36,515 INFO L87 Difference]: Start difference. First operand 102 states and 143 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:15:36,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:15:36,963 INFO L93 Difference]: Finished difference Result 127 states and 170 transitions. [2024-12-01 13:15:36,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 13:15:36,964 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 65 [2024-12-01 13:15:36,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:15:36,965 INFO L225 Difference]: With dead ends: 127 [2024-12-01 13:15:36,965 INFO L226 Difference]: Without dead ends: 125 [2024-12-01 13:15:36,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-12-01 13:15:36,966 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 54 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 13:15:36,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 232 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 13:15:36,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-12-01 13:15:36,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 102. [2024-12-01 13:15:36,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 71 states have (on average 1.2535211267605635) internal successors, (89), 71 states have internal predecessors, (89), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-12-01 13:15:36,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 143 transitions. [2024-12-01 13:15:36,982 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 143 transitions. Word has length 65 [2024-12-01 13:15:36,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:15:36,982 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 143 transitions. [2024-12-01 13:15:36,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:15:36,982 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 143 transitions. [2024-12-01 13:15:36,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-01 13:15:36,983 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:15:36,983 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:15:36,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-12-01 13:15:37,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:15:37,184 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:15:37,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:15:37,184 INFO L85 PathProgramCache]: Analyzing trace with hash 434558742, now seen corresponding path program 1 times [2024-12-01 13:15:37,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 13:15:37,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710945309] [2024-12-01 13:15:37,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:15:37,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:15:37,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-01 13:15:37,186 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-01 13:15:37,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-12-01 13:15:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:15:37,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-01 13:15:37,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-01 13:16:06,032 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:06,032 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 13:16:06,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710945309] [2024-12-01 13:16:06,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710945309] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:06,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:06,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-01 13:16:06,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164180702] [2024-12-01 13:16:06,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:06,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-01 13:16:06,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 13:16:06,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-01 13:16:06,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:16:06,033 INFO L87 Difference]: Start difference. First operand 102 states and 143 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:16:07,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:07,201 INFO L93 Difference]: Finished difference Result 124 states and 166 transitions. [2024-12-01 13:16:07,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:16:07,201 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 65 [2024-12-01 13:16:07,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:07,202 INFO L225 Difference]: With dead ends: 124 [2024-12-01 13:16:07,202 INFO L226 Difference]: Without dead ends: 122 [2024-12-01 13:16:07,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-12-01 13:16:07,203 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 49 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:07,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 240 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-01 13:16:07,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-12-01 13:16:07,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 112. [2024-12-01 13:16:07,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 80 states have (on average 1.2375) internal successors, (99), 80 states have internal predecessors, (99), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-12-01 13:16:07,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 153 transitions. [2024-12-01 13:16:07,211 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 153 transitions. Word has length 65 [2024-12-01 13:16:07,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:07,211 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 153 transitions. [2024-12-01 13:16:07,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:16:07,211 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 153 transitions. [2024-12-01 13:16:07,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-01 13:16:07,212 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:07,213 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:07,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-12-01 13:16:07,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:16:07,413 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:07,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:07,414 INFO L85 PathProgramCache]: Analyzing trace with hash 352705850, now seen corresponding path program 1 times [2024-12-01 13:16:07,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 13:16:07,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749434382] [2024-12-01 13:16:07,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:07,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:16:07,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-01 13:16:07,416 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-01 13:16:07,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-12-01 13:16:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:07,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-01 13:16:07,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:23,399 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-01 13:16:23,399 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:23,399 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 13:16:23,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749434382] [2024-12-01 13:16:23,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749434382] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:23,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:23,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-01 13:16:23,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957835527] [2024-12-01 13:16:23,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:23,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 13:16:23,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 13:16:23,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 13:16:23,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:16:23,401 INFO L87 Difference]: Start difference. First operand 112 states and 153 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:16:24,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:24,663 INFO L93 Difference]: Finished difference Result 129 states and 171 transitions. [2024-12-01 13:16:24,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-01 13:16:24,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 66 [2024-12-01 13:16:24,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:24,665 INFO L225 Difference]: With dead ends: 129 [2024-12-01 13:16:24,665 INFO L226 Difference]: Without dead ends: 127 [2024-12-01 13:16:24,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-12-01 13:16:24,666 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 56 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:24,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 267 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-01 13:16:24,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-12-01 13:16:24,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 113. [2024-12-01 13:16:24,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 81 states have internal predecessors, (101), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-12-01 13:16:24,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 155 transitions. [2024-12-01 13:16:24,680 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 155 transitions. Word has length 66 [2024-12-01 13:16:24,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:24,681 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 155 transitions. [2024-12-01 13:16:24,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:16:24,681 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 155 transitions. [2024-12-01 13:16:24,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-01 13:16:24,682 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:24,682 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:24,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-12-01 13:16:24,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:16:24,883 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:24,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:24,883 INFO L85 PathProgramCache]: Analyzing trace with hash 350858808, now seen corresponding path program 1 times [2024-12-01 13:16:24,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 13:16:24,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949077620] [2024-12-01 13:16:24,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:24,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:16:24,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-01 13:16:24,885 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-01 13:16:24,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-12-01 13:16:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:24,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-01 13:16:24,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:53,412 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-01 13:16:53,412 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:53,413 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 13:16:53,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949077620] [2024-12-01 13:16:53,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949077620] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:53,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:53,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-01 13:16:53,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47977611] [2024-12-01 13:16:53,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:53,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 13:16:53,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 13:16:53,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 13:16:53,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:16:53,414 INFO L87 Difference]: Start difference. First operand 113 states and 155 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:16:54,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:54,621 INFO L93 Difference]: Finished difference Result 127 states and 169 transitions. [2024-12-01 13:16:54,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-01 13:16:54,622 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 66 [2024-12-01 13:16:54,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:54,623 INFO L225 Difference]: With dead ends: 127 [2024-12-01 13:16:54,623 INFO L226 Difference]: Without dead ends: 125 [2024-12-01 13:16:54,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-12-01 13:16:54,623 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 57 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:54,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 275 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-01 13:16:54,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-12-01 13:16:54,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 113. [2024-12-01 13:16:54,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 81 states have internal predecessors, (101), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-12-01 13:16:54,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 155 transitions. [2024-12-01 13:16:54,639 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 155 transitions. Word has length 66 [2024-12-01 13:16:54,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:54,639 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 155 transitions. [2024-12-01 13:16:54,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:16:54,639 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 155 transitions. [2024-12-01 13:16:54,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-01 13:16:54,641 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:54,641 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:54,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-12-01 13:16:54,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:16:54,842 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:54,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:54,842 INFO L85 PathProgramCache]: Analyzing trace with hash -154222686, now seen corresponding path program 1 times [2024-12-01 13:16:54,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 13:16:54,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714295082] [2024-12-01 13:16:54,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:54,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:16:54,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-01 13:16:54,844 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-01 13:16:54,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-12-01 13:16:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:54,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-01 13:16:54,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-12-01 13:16:54,993 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:54,993 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 13:16:54,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714295082] [2024-12-01 13:16:54,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714295082] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:54,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:54,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 13:16:54,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821622677] [2024-12-01 13:16:54,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:54,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:16:54,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 13:16:54,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:16:54,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-01 13:16:54,994 INFO L87 Difference]: Start difference. First operand 113 states and 155 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:16:55,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:55,130 INFO L93 Difference]: Finished difference Result 175 states and 240 transitions. [2024-12-01 13:16:55,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 13:16:55,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 125 [2024-12-01 13:16:55,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:55,132 INFO L225 Difference]: With dead ends: 175 [2024-12-01 13:16:55,132 INFO L226 Difference]: Without dead ends: 141 [2024-12-01 13:16:55,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-01 13:16:55,132 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 34 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:55,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 153 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:16:55,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-12-01 13:16:55,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 136. [2024-12-01 13:16:55,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 96 states have (on average 1.2395833333333333) internal successors, (119), 97 states have internal predecessors, (119), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-12-01 13:16:55,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 187 transitions. [2024-12-01 13:16:55,145 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 187 transitions. Word has length 125 [2024-12-01 13:16:55,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:55,146 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 187 transitions. [2024-12-01 13:16:55,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:16:55,146 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 187 transitions. [2024-12-01 13:16:55,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-01 13:16:55,148 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:55,148 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:55,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-12-01 13:16:55,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:16:55,348 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:55,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:55,349 INFO L85 PathProgramCache]: Analyzing trace with hash -96964384, now seen corresponding path program 1 times [2024-12-01 13:16:55,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 13:16:55,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543579797] [2024-12-01 13:16:55,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:55,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:16:55,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-01 13:16:55,351 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-01 13:16:55,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-12-01 13:16:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:55,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-01 13:16:55,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:20:34,269 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-12-01 13:20:34,270 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:20:34,270 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 13:20:34,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543579797] [2024-12-01 13:20:34,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543579797] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:20:34,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:20:34,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 13:20:34,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060800456] [2024-12-01 13:20:34,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:20:34,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:20:34,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 13:20:34,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:20:34,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:20:34,271 INFO L87 Difference]: Start difference. First operand 136 states and 187 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:20:34,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:20:34,683 INFO L93 Difference]: Finished difference Result 161 states and 211 transitions. [2024-12-01 13:20:34,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 13:20:34,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 125 [2024-12-01 13:20:34,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:20:34,685 INFO L225 Difference]: With dead ends: 161 [2024-12-01 13:20:34,686 INFO L226 Difference]: Without dead ends: 159 [2024-12-01 13:20:34,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:20:34,686 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 49 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 13:20:34,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 321 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 13:20:34,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-12-01 13:20:34,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 140. [2024-12-01 13:20:34,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 100 states have internal predecessors, (122), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-12-01 13:20:34,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2024-12-01 13:20:34,699 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 125 [2024-12-01 13:20:34,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:20:34,700 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2024-12-01 13:20:34,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:20:34,700 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2024-12-01 13:20:34,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-01 13:20:34,701 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:20:34,701 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:20:34,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-12-01 13:20:34,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:20:34,901 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:20:34,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:20:34,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1055358128, now seen corresponding path program 1 times [2024-12-01 13:20:34,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 13:20:34,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280751734] [2024-12-01 13:20:34,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:20:34,902 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:20:34,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-01 13:20:34,904 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-01 13:20:34,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-12-01 13:20:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:20:35,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-01 13:20:35,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:45,000 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-12-01 13:21:45,001 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:45,001 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 13:21:45,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280751734] [2024-12-01 13:21:45,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280751734] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:45,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:21:45,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-01 13:21:45,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853679088] [2024-12-01 13:21:45,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:45,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 13:21:45,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 13:21:45,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 13:21:45,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-01 13:21:45,002 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:21:45,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:45,406 INFO L93 Difference]: Finished difference Result 167 states and 217 transitions. [2024-12-01 13:21:45,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:21:45,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 126 [2024-12-01 13:21:45,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:45,408 INFO L225 Difference]: With dead ends: 167 [2024-12-01 13:21:45,408 INFO L226 Difference]: Without dead ends: 165 [2024-12-01 13:21:45,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:21:45,409 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 56 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:45,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 334 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 13:21:45,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-12-01 13:21:45,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 140. [2024-12-01 13:21:45,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 100 states have internal predecessors, (122), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-12-01 13:21:45,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2024-12-01 13:21:45,424 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 126 [2024-12-01 13:21:45,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:45,424 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2024-12-01 13:21:45,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:21:45,424 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2024-12-01 13:21:45,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-01 13:21:45,425 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:45,425 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:45,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-12-01 13:21:45,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:21:45,626 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:45,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:45,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1053511086, now seen corresponding path program 1 times [2024-12-01 13:21:45,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 13:21:45,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704675576] [2024-12-01 13:21:45,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:45,627 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:21:45,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-01 13:21:45,628 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-01 13:21:45,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-12-01 13:21:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:45,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-01 13:21:45,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:26:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-12-01 13:26:00,289 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:26:00,289 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 13:26:00,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704675576] [2024-12-01 13:26:00,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704675576] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:26:00,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:26:00,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-01 13:26:00,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102241789] [2024-12-01 13:26:00,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:26:00,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 13:26:00,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 13:26:00,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 13:26:00,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-01 13:26:00,290 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:26:00,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:26:00,799 INFO L93 Difference]: Finished difference Result 169 states and 220 transitions. [2024-12-01 13:26:00,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:26:00,800 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 126 [2024-12-01 13:26:00,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:26:00,802 INFO L225 Difference]: With dead ends: 169 [2024-12-01 13:26:00,802 INFO L226 Difference]: Without dead ends: 167 [2024-12-01 13:26:00,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:26:00,802 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 70 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 13:26:00,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 328 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 13:26:00,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-12-01 13:26:00,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 133. [2024-12-01 13:26:00,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 92 states have (on average 1.2173913043478262) internal successors, (112), 93 states have internal predecessors, (112), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-12-01 13:26:00,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 180 transitions. [2024-12-01 13:26:00,814 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 180 transitions. Word has length 126 [2024-12-01 13:26:00,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:26:00,815 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 180 transitions. [2024-12-01 13:26:00,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:26:00,815 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 180 transitions. [2024-12-01 13:26:00,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-01 13:26:00,816 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:26:00,816 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:26:00,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2024-12-01 13:26:01,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:26:01,017 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:26:01,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:26:01,017 INFO L85 PathProgramCache]: Analyzing trace with hash 154244299, now seen corresponding path program 1 times [2024-12-01 13:26:01,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 13:26:01,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40544990] [2024-12-01 13:26:01,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:26:01,018 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 [2024-12-01 13:26:01,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-01 13:26:01,020 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-01 13:26:01,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-12-01 13:26:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:26:01,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-01 13:26:01,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:26:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2024-12-01 13:26:01,188 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:26:01,188 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 13:26:01,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40544990] [2024-12-01 13:26:01,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40544990] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:26:01,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:26:01,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 13:26:01,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131944119] [2024-12-01 13:26:01,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:26:01,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:26:01,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 13:26:01,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:26:01,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:26:01,189 INFO L87 Difference]: Start difference. First operand 133 states and 180 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:26:01,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:26:01,222 INFO L93 Difference]: Finished difference Result 196 states and 264 transitions. [2024-12-01 13:26:01,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:26:01,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 126 [2024-12-01 13:26:01,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:26:01,227 INFO L225 Difference]: With dead ends: 196 [2024-12-01 13:26:01,227 INFO L226 Difference]: Without dead ends: 133 [2024-12-01 13:26:01,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:26:01,228 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:26:01,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:26:01,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-12-01 13:26:01,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 101. [2024-12-01 13:26:01,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 71 states have internal predecessors, (83), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-12-01 13:26:01,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 133 transitions. [2024-12-01 13:26:01,242 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 133 transitions. Word has length 126 [2024-12-01 13:26:01,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:26:01,243 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 133 transitions. [2024-12-01 13:26:01,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-01 13:26:01,243 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 133 transitions. [2024-12-01 13:26:01,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-01 13:26:01,244 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:26:01,245 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:26:01,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-12-01 13:26:01,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:26:01,445 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:26:01,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:26:01,446 INFO L85 PathProgramCache]: Analyzing trace with hash 211502601, now seen corresponding path program 1 times [2024-12-01 13:26:01,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 13:26:01,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413063365] [2024-12-01 13:26:01,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:26:01,446 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-01 13:26:01,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-01 13:26:01,449 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-01 13:26:01,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d000e57d-a7e9-4d5c-ba7b-3cfbfb01a21a/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-12-01 13:26:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:26:01,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-01 13:26:01,638 INFO L279 TraceCheckSpWp]: Computing forward predicates...